diff --git a/ANNOUNCE b/ANNOUNCE
index a3662b70..a8830051 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.2.33beta01 - October 6, 2008
+Libpng 1.2.33rc01 - October 15, 2008
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -9,37 +9,37 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.2.33beta01.tar.gz
-   libpng-1.2.33beta01.tar.lzma
+   libpng-1.2.33rc01.tar.gz
+   libpng-1.2.33rc01.tar.lzma
      (Get the lzma codec from <http://tukaani.org/lzma>).
-   libpng-1.2.33beta01.tar.bz2
+   libpng-1.2.33rc01.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   libpng-1.2.33beta01-no-config.tar.gz
-   libpng-1.2.33beta01-no-config.tar.lzma
-   libpng-1.2.33beta01-no-config.tar.bz2
+   libpng-1.2.33rc01-no-config.tar.gz
+   libpng-1.2.33rc01-no-config.tar.lzma
+   libpng-1.2.33rc01-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1233b01.zip
-   lp1233b01.7z
-   lp1233b01.tar.bz2
+   lp1233r01.zip
+   lp1233r01.7z
+   lp1233r01.tar.bz2
 
 Project files
 
-   libpng-1.2.33beta01-project-netware.zip
-   libpng-1.2.33beta01-project-wince.zip
+   libpng-1.2.33rc01-project-netware.zip
+   libpng-1.2.33rc01-project-wince.zip
 
 Other information:
 
-   libpng-1.2.33beta01-README.txt
-   libpng-1.2.33beta01-KNOWNBUGS.txt
-   libpng-1.2.33beta01-LICENSE.txt
-   libpng-1.2.33beta01-Y2K-compliance.txt
-   libpng-1.2.33beta01-[previous version]-diff.txt
+   libpng-1.2.33rc01-README.txt
+   libpng-1.2.33rc01-KNOWNBUGS.txt
+   libpng-1.2.33rc01-LICENSE.txt
+   libpng-1.2.33rc01-Y2K-compliance.txt
+   libpng-1.2.33rc01-[previous version]-diff.txt
 
 Changes since the last public release (1.2.32):
 
diff --git a/CHANGES b/CHANGES
index adf1c606..68bdd0aa 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2186,7 +2186,7 @@ version 1.2.30beta03 [July 6, 2008]
 version 1.2.30beta04 [July 10, 2008]
   Merged more cosmetic whitespace changes from libpng-1.4.0beta19.
 
-version 1.0.38rc01, 1.2.30rc01 [October 6, 2008]
+version 1.0.38rc01, 1.2.30rc01 [October 15, 2008]
   No changes.
 
 version 1.0.38rc02, 1.2.30rc02 [July 21, 2008]
diff --git a/INSTALL b/INSTALL
index 00ee1984..32c496b6 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.2.33beta01 - October 6, 2008
+Installing libpng version 1.2.33rc01 - October 15, 2008
 
 On Unix/Linux and similar systems, you can simply type
 
@@ -44,7 +44,7 @@ to have access to the zlib.h and zconf.h include files that
 correspond to the version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.2.33beta01" or "lpng109" and "zlib-1.2.1"
+might be called "libpng-1.2.33rc01" or "lpng109" and "zlib-1.2.1"
 or "zlib121") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -101,9 +101,9 @@ include
  CMakeLists.txt    =>  "cmake" script
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng12.so.0.1.2.33beta01)
+                       gcc, creates libpng12.so.0.1.2.33rc01)
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng12.so.0.1.2.33beta01)
+                       (gcc, creates libpng12.so.0.1.2.33rc01)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
                        ansi2knr (Requires ansi2knr.c from
@@ -125,14 +125,14 @@ include
  makefile.openbsd  =>  OpenBSD makefile
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng12.so.0.1.2.33beta01)
+                       creates libpng12.so.0.1.2.33rc01)
  makefile.sunos    =>  Sun makefile
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.33beta01)
+                       creates libpng12.so.0.1.2.33rc01)
  makefile.solaris-x86 =>  Solaris/intelMMX 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.33beta01)
+                       creates libpng12.so.0.1.2.33rc01)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng12.so.0.1.2.33beta01)
+                       creates libpng12.so.0.1.2.33rc01)
  makefile.32sunu   =>  Sun Ultra 32-bit makefile
  makefile.64sunu   =>  Sun Ultra 64-bit makefile
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
diff --git a/KNOWNBUG b/KNOWNBUG
index 33baaf1b..0a69f776 100644
--- a/KNOWNBUG
+++ b/KNOWNBUG
@@ -1,5 +1,5 @@
 
-Known bugs in libpng version 1.2.33beta01
+Known bugs in libpng version 1.2.33rc01
 
 1. February 23, 2006: The custom makefiles don't build libpng with -lz.
 
diff --git a/LICENSE b/LICENSE
index fa046498..61592320 100644
--- a/LICENSE
+++ b/LICENSE
@@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.33beta01, October 6, 2008, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.33rc01, October 15, 2008, are
 Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -106,4 +106,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-October 6, 2008
+October 15, 2008
diff --git a/Makefile.am b/Makefile.am
index fbdde005..ed71ec15 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -86,7 +86,7 @@ EXTRA_DIST= \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.2.33beta01.txt pngvcrd.c 
+	example.c libpng-1.2.33rc01.txt pngvcrd.c 
 
 CLEANFILES= pngout.png libpng12.pc libpng12-config libpng.vers \
 libpng.sym
diff --git a/Makefile.in b/Makefile.in
index fce42a98..695bb37d 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -331,7 +331,7 @@ EXTRA_DIST = \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.2.33beta01.txt pngvcrd.c 
+	example.c libpng-1.2.33rc01.txt pngvcrd.c 
 
 CLEANFILES = pngout.png libpng12.pc libpng12-config libpng.vers \
 libpng.sym
diff --git a/README b/README
index 83a767a8..3c09c473 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.2.33beta01 - October 6, 2008 (shared library 12.0)
+README for libpng version 1.2.33rc01 - October 15, 2008 (shared library 12.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
@@ -194,11 +194,11 @@ Files in this distribution:
        descrip.mms      =>  VMS makefile for MMS or MMK
        makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
        makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng12.so.0.1.2.33beta01)
+                            gcc, creates libpng12.so.0.1.2.33rc01)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.33beta01)
+                            (gcc, creates libpng12.so.0.1.2.33rc01)
        makefile.gcmmx   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.33beta01,
+                            (gcc, creates libpng12.so.0.1.2.33rc01,
                             uses assembler code tuned for Intel MMX platform)
        makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
        makefile.knr     =>  Archaic UNIX Makefile that converts files with
@@ -220,12 +220,12 @@ Files in this distribution:
        makefile.openbsd =>  OpenBSD makefile
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
        makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng12.so.0.1.2.33beta01)
+                            (gcc, creates libpng12.so.0.1.2.33rc01)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng12.so.0.1.2.33beta01)
+                            (gcc, creates libpng12.so.0.1.2.33rc01)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng12.so.0.1.2.33beta01)
+                            (gcc, creates libpng12.so.0.1.2.33rc01)
        makefile.32sunu  =>  Sun Ultra 32-bit makefile
        makefile.64sunu  =>  Sun Ultra 64-bit makefile
        makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
diff --git a/Y2KINFO b/Y2KINFO
index 57b1f635..45062ee7 100644
--- a/Y2KINFO
+++ b/Y2KINFO
@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      October 6, 2008
+      October 15, 2008
 
       Since the PNG Development group is an ad-hoc body, we can't make
       an official declaration.
 
       This is your unofficial assurance that libpng from version 0.71 and
-      upward through 1.2.33beta01 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.33rc01 are Y2K compliant.  It is my belief that earlier
       versions were also Y2K compliant.
 
       Libpng only has three year fields.  One is a 2-byte unsigned integer
diff --git a/configure b/configure
index 5a4cd88e..de4df443 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.62 for libpng 1.2.33beta01.
+# Generated by GNU Autoconf 2.62 for libpng 1.2.33rc01.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -745,8 +745,8 @@ SHELL=${CONFIG_SHELL-/bin/sh}
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.2.33beta01'
-PACKAGE_STRING='libpng 1.2.33beta01'
+PACKAGE_VERSION='1.2.33rc01'
+PACKAGE_STRING='libpng 1.2.33rc01'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 
 ac_unique_file="pngget.c"
@@ -1484,7 +1484,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures libpng 1.2.33beta01 to adapt to many kinds of systems.
+\`configure' configures libpng 1.2.33rc01 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1554,7 +1554,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.2.33beta01:";;
+     short | recursive ) echo "Configuration of libpng 1.2.33rc01:";;
    esac
   cat <<\_ACEOF
 
@@ -1661,7 +1661,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.2.33beta01
+libpng configure 1.2.33rc01
 generated by GNU Autoconf 2.62
 
 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@@ -1675,7 +1675,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libpng $as_me 1.2.33beta01, which was
+It was created by libpng $as_me 1.2.33rc01, which was
 generated by GNU Autoconf 2.62.  Invocation command line was
 
   $ $0 $@
@@ -2389,7 +2389,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.2.33beta01'
+ VERSION='1.2.33rc01'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2558,7 +2558,7 @@ fi
 
 
 
-PNGLIB_VERSION=1.2.33beta01
+PNGLIB_VERSION=1.2.33rc01
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=2
 PNGLIB_RELEASE=33
@@ -13125,7 +13125,7 @@ exec 6>&1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng $as_me 1.2.33beta01, which was
+This file was extended by libpng $as_me 1.2.33rc01, which was
 generated by GNU Autoconf 2.62.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -13178,7 +13178,7 @@ Report bugs to <bug-autoconf@gnu.org>."
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_version="\\
-libpng config.status 1.2.33beta01
+libpng config.status 1.2.33rc01
 configured by $0, generated by GNU Autoconf 2.62,
   with options \\"`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"
 
diff --git a/configure.ac b/configure.ac
index 7e434326..1c9e3f15 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,12 +18,12 @@ AC_PREREQ(2.59)
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.2.33beta01], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.2.33rc01], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.2.33beta01
+PNGLIB_VERSION=1.2.33rc01
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=2
 PNGLIB_RELEASE=33
diff --git a/example.c b/example.c
index ef4e8845..84476262 100644
--- a/example.c
+++ b/example.c
@@ -2,7 +2,7 @@
 #if 0 /* in case someone actually tries to compile this */
 
 /* example.c - an example of using libpng
- * Last changed in libpng 1.2.33 [October 6, 2008]
+ * Last changed in libpng 1.2.33 [October 15, 2008]
  * This file has been placed in the public domain by the authors.
  * Maintained 1998-2008 Glenn Randers-Pehrson
  * Maintained 1996, 1997 Andreas Dilger)
diff --git a/libpng-1.2.33beta01.txt b/libpng-1.2.33rc01.txt
similarity index 99%
rename from libpng-1.2.33beta01.txt
rename to libpng-1.2.33rc01.txt
index 209f4dc1..f220fc0e 100644
--- a/libpng-1.2.33beta01.txt
+++ b/libpng-1.2.33rc01.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.33beta01 - October 6, 2008
+ libpng version 1.2.33rc01 - October 15, 2008
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2008 Glenn Randers-Pehrson
@@ -9,7 +9,7 @@ libpng.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.2.33beta01 - October 6, 2008
+ libpng versions 0.97, January 1998, through 1.2.33rc01 - October 15, 2008
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2008 Glenn Randers-Pehrson
 
@@ -2852,13 +2852,13 @@ application:
 
 IX. Y2K Compliance in libpng
 
-October 6, 2008
+October 15, 2008
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.2.33beta01 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.33rc01 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
diff --git a/libpng.3 b/libpng.3
index 09d48fbe..619dbe7a 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "October 6, 2008"
+.TH LIBPNG 3 "October 15, 2008"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.33beta01
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.33rc01
 .SH SYNOPSIS
 \fI\fB
 
@@ -821,7 +821,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.33beta01 - October 6, 2008
+ libpng version 1.2.33rc01 - October 15, 2008
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2008 Glenn Randers-Pehrson
@@ -830,7 +830,7 @@ libpng.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.2.33beta01 - October 6, 2008
+ libpng versions 0.97, January 1998, through 1.2.33rc01 - October 15, 2008
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2008 Glenn Randers-Pehrson
 
@@ -3673,13 +3673,13 @@ application:
 
 .SH IX. Y2K Compliance in libpng
 
-October 6, 2008
+October 15, 2008
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.2.33beta01 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.33rc01 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
@@ -3926,7 +3926,7 @@ the first widely used release:
  1.2.32rc01          13    10232  12.so.0.32[.0]
  1.0.40              10    10040  10.so.0.40[.0]
  1.2.32              13    10232  12.so.0.32[.0]
- 1.2.33beta01        13    10233  12.so.0.33[.0]
+ 1.2.33beta01-02     13    10233  12.so.0.33[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -3982,7 +3982,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.33beta01 - October 6, 2008:
+Libpng version 1.2.33rc01 - October 15, 2008:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -4003,7 +4003,7 @@ included in the libpng distribution, the latter shall prevail.)
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.33beta01, October 6, 2008, are
+libpng versions 1.2.6, August 15, 2004, through 1.2.33rc01, October 15, 2008, are
 Copyright (c) 2004,2006-2008 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -4102,7 +4102,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-October 6, 2008
+October 15, 2008
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 794ef944..a9c5d86c 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "October 6, 2008"
+.TH LIBPNGPF 3 "October 15, 2008"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.33beta01
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.33rc01
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
diff --git a/png.5 b/png.5
index 42f06f16..db18bea2 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "October 6, 2008"
+.TH PNG 5 "October 15, 2008"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 10a745b9..661c5861 100644
--- a/png.c
+++ b/png.c
@@ -13,7 +13,7 @@
 #include "png.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_33beta01 Your_png_h_is_not_version_1_2_33beta01;
+typedef version_1_2_33rc01 Your_png_h_is_not_version_1_2_33rc01;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
@@ -694,7 +694,7 @@ png_charp PNGAPI
 png_get_copyright(png_structp png_ptr)
 {
    png_ptr = png_ptr;  /* silence compiler warning about unused png_ptr */
-   return ((png_charp) "\n libpng version 1.2.33beta01 - October 6, 2008\n\
+   return ((png_charp) "\n libpng version 1.2.33rc01 - October 15, 2008\n\
    Copyright (c) 1998-2008 Glenn Randers-Pehrson\n\
    Copyright (c) 1996-1997 Andreas Dilger\n\
    Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
diff --git a/png.h b/png.h
index 8f2cf7e8..aa84819e 100644
--- a/png.h
+++ b/png.h
@@ -1,6 +1,6 @@
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.33beta01 - October 6, 2008
+ * libpng version 1.2.33rc01 - October 15, 2008
  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -8,7 +8,7 @@
  * Authors and maintainers:
  *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *  libpng versions 0.97, January 1998, through 1.2.33beta01 - October 6, 2008: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.33rc01 - October 15, 2008: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -207,7 +207,7 @@
  *    1.2.32rc01              13    10232  12.so.0.32[.0]
  *    1.0.40                  10    10040  10.so.0.40[.0]
  *    1.2.32                  13    10232  12.so.0.32[.0]
- *    1.2.33beta01            13    10233  12.so.0.33[.0]
+ *    1.2.33beta01-02         13    10233  12.so.0.33[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -237,7 +237,7 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.2.33beta01, October 6, 2008, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.33rc01, October 15, 2008, are
  * Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.2.5
  * with the following individual added to the list of Contributing Authors:
@@ -349,13 +349,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    October 6, 2008
+ *    October 15, 2008
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
  *
  *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.2.33beta01 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.33rc01 are Y2K compliant.  It is my belief that earlier
  *    versions were also Y2K compliant.
  *
  *    Libpng only has three year fields.  One is a 2-byte unsigned integer
@@ -411,9 +411,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.33beta01"
+#define PNG_LIBPNG_VER_STRING "1.2.33rc01"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.33beta01 - October 6, 2008\n"
+   " libpng version 1.2.33rc01 - October 15, 2008\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  13
@@ -442,7 +442,7 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_PRIVATE */
 
-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_RC
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
@@ -1470,7 +1470,7 @@ struct png_struct_def
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef png_structp version_1_2_33beta01;
+typedef png_structp version_1_2_33rc01;
 
 typedef png_struct FAR * FAR * png_structpp;
 
diff --git a/pngconf.h b/pngconf.h
index 0a458796..ffcce088 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.2.33beta01 - October 6, 2008
+ * libpng version 1.2.33rc01 - October 15, 2008
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngtest.c b/pngtest.c
index 005ac3e8..7ff78585 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1685,4 +1685,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_33beta01 your_png_h_is_not_version_1_2_33beta01;
+typedef version_1_2_33rc01 your_png_h_is_not_version_1_2_33rc01;
diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
index 341c54de..886f4528 100644
--- a/scripts/CMakeLists.txt
+++ b/scripts/CMakeLists.txt
@@ -169,7 +169,7 @@ configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in
 
 # SET UP LINKS
 set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#    VERSION 0.${PNGLIB_RELEASE}.1.2.33beta01
+#    VERSION 0.${PNGLIB_RELEASE}.1.2.33rc01
      VERSION 0.${PNGLIB_RELEASE}.0
      SOVERSION 0
      CLEAN_DIRECT_OUTPUT 1)
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index 3d7b6d2c..ebf952ce 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -8,7 +8,7 @@
 
 # Modeled after libxml-config.
 
-version=1.2.33beta01
+version=1.2.33rc01
 prefix=""
 libdir=""
 libs=""
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index 3240db9c..7e360315 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@ includedir=@includedir@/libpng12
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.2.33beta01
+Version: 1.2.33rc01
 Libs: -L${libdir} -lpng12
 Cflags: -I${includedir}
diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu
index 08502cd0..087a21b9 100644
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu
index 48c7ad20..543d1c10 100644
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index 767b34ea..d9a46d8a 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -20,7 +20,7 @@ LN_SF = ln -f -s
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local
diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index 644441ba..65ead6d9 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin
index dcc456e4..8cbc0b91 100644
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -74,7 +74,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
 LIBNAME = libpng12
 PNGMAJ = 0
 CYGDLL = 12
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(CYGDLL).dll
diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index e67390ae..5b078b00 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -19,7 +19,7 @@ ZLIBINC=../zlib
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 12
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.dec b/scripts/makefile.dec
index 3a6da60a..e36a0e3a 100644
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -5,7 +5,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
diff --git a/scripts/makefile.elf b/scripts/makefile.elf
index 668dfc63..b458784e 100644
--- a/scripts/makefile.elf
+++ b/scripts/makefile.elf
@@ -13,7 +13,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.gcmmx b/scripts/makefile.gcmmx
index ece3e123..a174f0d3 100644
--- a/scripts/makefile.gcmmx
+++ b/scripts/makefile.gcmmx
@@ -14,7 +14,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.hp64 b/scripts/makefile.hp64
index 9df16f22..4cce6fae 100644
--- a/scripts/makefile.hp64
+++ b/scripts/makefile.hp64
@@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc
index 116205b8..30555c50 100644
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux
index bb3ae25b..1776059e 100644
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index 1221c365..28080e63 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -7,7 +7,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.mingw b/scripts/makefile.mingw
index e6caadd2..7743cc31 100644
--- a/scripts/makefile.mingw
+++ b/scripts/makefile.mingw
@@ -74,7 +74,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
 LIBNAME = libpng12
 PNGMAJ = 0
 MINGDLL = 12
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=libpng$(MINGDLL).dll
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index 748cf0c7..6d1774d5 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng12
 
 LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.33beta01
+SHLIB_MINOR=	1.2.33rc01
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index 262cfe5e..240229cc 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.2.33beta01
+SHLIB_MINOR=	1.2.33rc01
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.nommx b/scripts/makefile.nommx
index d095b518..6534ef2a 100644
--- a/scripts/makefile.nommx
+++ b/scripts/makefile.nommx
@@ -7,7 +7,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index a72a0265..e03b5087 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -8,7 +8,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.33beta01
+SHLIB_MINOR=	1.2.33rc01
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
diff --git a/scripts/makefile.sco b/scripts/makefile.sco
index 84ecb042..6595b48e 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -9,7 +9,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc
index c453438f..beba83db 100644
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index 1bf37658..795f5be5 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.so9 b/scripts/makefile.so9
index 5af61b7d..6fb76671 100644
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -8,7 +8,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index 29d6be87..382263c9 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.solaris-x86 b/scripts/makefile.solaris-x86
index 80fae020..9d968d84 100644
--- a/scripts/makefile.solaris-x86
+++ b/scripts/makefile.solaris-x86
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.33beta01
+PNGMIN = 1.2.33rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index 37676ce9..50af4878 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.2.33beta01
+; Version 1.2.33rc01
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
diff --git a/scripts/pngw32.def b/scripts/pngw32.def
index 1f6d22e1..0ca324d7 100644
--- a/scripts/pngw32.def
+++ b/scripts/pngw32.def
@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.2.33beta01
+;Version 1.2.33rc01
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3