diff --git a/ANNOUNCE b/ANNOUNCE
index ceff23dd..fd09da0f 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -41,7 +41,9 @@ Other information:
 Changes since the last public release (1.2.57):
 
 version 1.2.58beta01 [August 7, 2017]
-   Added png_check_chunk_length() function.
+  Added png_check_chunk_length() function, and check all chunks except
+    IDAT against the default 8MB limit; check IDAT against the maximum
+    size computed from IHDR parameters.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index a1a45f3c..914ab1ac 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2930,7 +2930,9 @@ version 1.0.67 and 1.2.57 [December 29, 2016]
     and patch by Patrick Keshishian, CVE-2016-10087).
 
 version 1.2.58beta01 [August 7, 2017]
-   Added png_check_chunk_length() function.
+  Added png_check_chunk_length() function, and check all chunks except
+    IDAT against the default 8MB limit; check IDAT against the maximum
+    size computed from IHDR parameters.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/pngpread.c b/pngpread.c
index 1c716893..470bc889 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.2.58 [%RDATE%]
+ * Last changed in libpng 1.2.58 [(PENDING RELEASE)]
  * Copyright (c) 1998-2002,2004,2006-2015,2017 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.)
diff --git a/pngrutil.c b/pngrutil.c
index b535deaa..f1c36211 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.2.58 [%RDATE%]
+ * Last changed in libpng 1.2.58 [(PENDING RELEASE)]
  * Copyright (c) 1998-2002,2004,2006-2015,2017 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.)