diff --git a/INSTALL b/INSTALL
index 603a14c23..ecbcd5070 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.4.0beta70 - July 25, 2009
+Installing libpng version 1.4.0beta70 - July 28, 2009
 
 On Unix/Linux and similar systems, you can simply type
 
diff --git a/LICENSE b/LICENSE
index 7bd090427..8ea62f72d 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,7 +10,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.4.0beta70, July 25, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.4.0beta70, July 28, 2009, are
 Copyright (c) 2004, 2006-2007 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
@@ -108,4 +108,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-July 25, 2009
+July 28, 2009
diff --git a/README b/README
index 00fc6a1e3..c4a1113c2 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.4.0beta70 - July 25, 2009 (shared library 14.0)
+README for libpng version 1.4.0beta70 - July 28, 2009 (shared library 14.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
diff --git a/example.c b/example.c
index 906b1f755..8cf3a0b8e 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 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * This file has been placed in the public domain by the authors.
  * Maintained 1998-2009 Glenn Randers-Pehrson
  * Maintained 1996, 1997 Andreas Dilger)
diff --git a/libpng-1.4.0beta70.txt b/libpng-1.4.0beta70.txt
index 1a8a6b7a5..063bbee2b 100644
--- a/libpng-1.4.0beta70.txt
+++ b/libpng-1.4.0beta70.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.4.0beta70 - July 25, 2009
+ libpng version 1.4.0beta70 - July 28, 2009
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ libpng.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.4.0beta70 - July 25, 2009
+ libpng versions 0.97, January 1998, through 1.4.0beta70 - July 28, 2009
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
 
@@ -3126,7 +3126,10 @@ exported functions are marked with PNGAPI:
     body;
  }
 
-The prototypes for all exported functions appear in png.h.
+The prototypes for all exported functions appear in png.h,
+above the comment that says
+
+    /* Maintainer: Put new public prototypes here ... */
 
 We mark all non-exported functions with "/* PRIVATE */"":
 
@@ -3136,9 +3139,12 @@ We mark all non-exported functions with "/* PRIVATE */"":
     body;
  }
 
-The prototypes for non-exported functions can appear in
+The prototypes for non-exported functions (except for those in
+pngtest) appear in
 pngpriv.h
-or in the file where the function is located.
+above the comment that says
+
+  /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
 
 The names of all exported functions and variables begin
 with  "png_", and all publicly visible C preprocessor
@@ -3162,7 +3168,7 @@ source.
 
 XIII. Y2K Compliance in libpng
 
-July 25, 2009
+July 28, 2009
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
diff --git a/libpng.3 b/libpng.3
index ade505148..3cd5b272e 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "July 25, 2009"
+.TH LIBPNG 3 "July 28, 2009"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta70
 .SH SYNOPSIS
@@ -809,7 +809,7 @@ 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 1.4.0beta70 - July 25, 2009
+ libpng version 1.4.0beta70 - July 28, 2009
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -820,7 +820,7 @@ libpng.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.4.0beta70 - July 25, 2009
+ libpng versions 0.97, January 1998, through 1.4.0beta70 - July 28, 2009
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2009 Glenn Randers-Pehrson
 
@@ -3935,7 +3935,10 @@ exported functions are marked with PNGAPI:
     body;
  }
 
-The prototypes for all exported functions appear in png.h.
+The prototypes for all exported functions appear in png.h,
+above the comment that says
+
+    /* Maintainer: Put new public prototypes here ... */
 
 We mark all non-exported functions with "/* PRIVATE */"":
 
@@ -3945,9 +3948,12 @@ We mark all non-exported functions with "/* PRIVATE */"":
     body;
  }
 
-The prototypes for non-exported functions can appear in
+The prototypes for non-exported functions (except for those in
+pngtest) appear in
 pngpriv.h
-or in the file where the function is located.
+above the comment that says
+
+  /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
 
 The names of all exported functions and variables begin
 with  "png_", and all publicly visible C preprocessor
@@ -3971,7 +3977,7 @@ source.
 
 .SH XIII. Y2K Compliance in libpng
 
-July 25, 2009
+July 28, 2009
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -4201,7 +4207,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.4.0beta70 - July 25, 2009:
+Libpng version 1.4.0beta70 - July 28, 2009:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -4224,7 +4230,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.4.0beta70, July 25, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.4.0beta70, July 28, 2009, are
 Copyright (c) 2004,2006-2007 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
@@ -4323,7 +4329,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-July 25, 2009
+July 28, 2009
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 52f18db98..a5d323631 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "July 25, 2009"
+.TH LIBPNGPF 3 "July 28, 2009"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta70
 (private functions)
@@ -7,6 +7,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta70
 
 \fI\fB
 
+\fBvoid png_64bit_product (long \fP\fIv1\fP\fB, long \fP\fIv2\fP\fB, unsigned long \fI*hi_product,
+
+\fBunsigned long \fI*lo_product\fP\fB);\fP
+
 \fI\fB
 
 \fBvoid png_build_gamma_table (png_structp \fIpng_ptr\fP\fB);\fP
diff --git a/png.5 b/png.5
index 9907368df..b0b2cd6d5 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "July 25, 2009"
+.TH PNG 5 "July 28, 2009"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index c33eeb8e8..f5046bd13 100644
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * Copyright (c) 1998-2009 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.)
@@ -652,13 +652,13 @@ png_get_copyright(png_structp png_ptr)
 #else
 #ifdef __STDC__
    return ((png_charp) PNG_STRING_NEWLINE \
-     "libpng version x 1.4.0beta70 - July 25, 2009" PNG_STRING_NEWLINE \
+     "libpng version x 1.4.0beta70 - July 28, 2009" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2009 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
      "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
      "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
      PNG_STRING_NEWLINE);
 #else
-      return ((png_charp) "libpng version 1.4.0beta70 - July 25, 2009\
+      return ((png_charp) "libpng version 1.4.0beta70 - July 28, 2009\
       Copyright (c) 1998-2009 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
@@ -776,9 +776,6 @@ png_convert_size(size_t size)
  *    A and D, and X || Y is (X << 16) + Y.
 */
 
-void /* PRIVATE */
-png_64bit_product (long v1, long v2, unsigned long *hi_product,
-   unsigned long *lo_product);
 void /* PRIVATE */
 png_64bit_product (long v1, long v2, unsigned long *hi_product,
    unsigned long *lo_product)
diff --git a/png.h b/png.h
index 6727f54db..949656d98 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.4.0beta70 - July 25, 2009
+ * libpng version 1.4.0beta70 - July 28, 2009
  * Copyright (c) 1998-2009 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.)
@@ -11,7 +11,7 @@
  * 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 1.4.0beta70 - July 25, 2009: Glenn
+ *  libpng versions 0.97, January 1998, through 1.4.0beta70 - July 28, 2009: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -161,7 +161,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.4.0beta70, July 25, 2009, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.4.0beta70, July 28, 2009, are
  * Copyright (c) 2004, 2006-2007 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:
@@ -337,7 +337,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.4.0beta70"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.4.0beta70 - July 25, 2009\n"
+   " libpng version 1.4.0beta70 - July 28, 2009\n"
 
 #define PNG_LIBPNG_VER_SONUM   14
 #define PNG_LIBPNG_VER_DLLNUM  14
diff --git a/pngconf.h b/pngconf.h
index bd73b245e..f55a8ee22 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.4.0beta70 - July 25, 2009
+ * libpng version 1.4.0beta70 - July 28, 2009
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngerror.c b/pngerror.c
index f9e944047..2ac552bc7 100644
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,7 +1,7 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * Copyright (c) 1998-2009 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/pngget.c b/pngget.c
index 82584e7d6..e76903b30 100644
--- a/pngget.c
+++ b/pngget.c
@@ -1,7 +1,7 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * Last changed in libpng 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * Copyright (c) 1998-2009 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/pngmem.c b/pngmem.c
index 07baafda7..46f020fa3 100644
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,7 +1,7 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * Last changed in libpng 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * Copyright (c) 1998-2009 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/pngpriv.h b/pngpriv.h
index a82197d60..958d56ec4 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -1,7 +1,7 @@
 
 /* pngpriv.h - private declarations for use inside libpng
  *
- * libpng version 1.4.0beta70 - July 25, 2009
+ * libpng version 1.4.0beta70 - July 28, 2009
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -851,6 +851,14 @@ PNG_EXTERN int png_check_cHRM_fixed  PNGARG((png_structp png_ptr,
    png_fixed_point int_blue_y));
 #endif
 
+#if defined(PNG_cHRM_SUPPORTED)
+#if !defined(PNG_NO_CHECK_cHRM)
+/* Added at libpng version 1.2.34 and 1.4.0 */
+PNG_EXTERN void png_64bit_product (long v1, long v2, unsigned long *hi_product,
+   unsigned long *lo_product);
+#endif
+#endif
+
 /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
 
 #ifdef __cplusplus
diff --git a/pngrio.c b/pngrio.c
index c81d57820..f52e5a603 100644
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@
 
 /* pngrio.c - functions for data input
  *
- * Last changed in libpng 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * Copyright (c) 1998-2009 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 5eb9a45bc..47f46b13f 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * Copyright (c) 1998-2009 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/pngtest.c b/pngtest.c
index 501b55844..2173b27f3 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * Last changed in libpng 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * Copyright (c) 1998-2009 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/pngtrans.c b/pngtrans.c
index 9abc9081b..d71e02928 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,7 +1,7 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * Last changed in libpng 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * Copyright (c) 1998-2009 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/pngwio.c b/pngwio.c
index c4c1af140..d0feec21c 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,7 +1,7 @@
 
 /* pngwio.c - functions for data output
  *
- * Last changed in libpng 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * Copyright (c) 1998-2009 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/pngwtran.c b/pngwtran.c
index 36990bacc..f2a38d21a 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,7 +1,7 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * Last changed in libpng 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * Copyright (c) 1998-2009 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/pngwutil.c b/pngwutil.c
index 84b3c3775..d5947a0d9 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.4.0 [July 25, 2009]
+ * Last changed in libpng 1.4.0 [July 28, 2009]
  * Copyright (c) 1998-2009 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.)