diff --git a/ANNOUNCE b/ANNOUNCE
index 13620f7e8..a160c1dc0 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.6.9beta01 - December 19, 2013
+Libpng 1.6.9beta01 - December 22, 2013
 
 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.
@@ -26,7 +26,7 @@ Other information:
 
 Changes since the last public release (1.6.8):
 
-Version 1.6.9beta01 [December 19, 2013]
+Version 1.6.9beta01 [December 22, 2013]
   Bookkeeping: Moved functions around (no changes). Moved transform
     function definitions before the place where they are called so that
     they can be masde static. Move the intrapixel functions and the
@@ -39,6 +39,8 @@ Version 1.6.9beta01 [December 19, 2013]
     segment of the DLL by 1208 bytes, about 0.6%. It also simplifies
     maintenance by removing the declarations from pngpriv.h and allowing
     easier changes to the internal interfaces.
+  Rebuilt configure scripts with automake-1.14 and autoconf-2.59(2013)
+    in the tar distributions.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index a6ae9ae32..d0b70dddf 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4750,7 +4750,7 @@ Version 1.6.8rc02 [December 14, 2013]
 Version 1.6.8 [December 19, 2013]
   No changes.
 
-Version 1.6.9beta01 [December 19, 2013]
+Version 1.6.9beta01 [December 22, 2013]
   Bookkeeping: Moved functions around (no changes). Moved transform
     function definitions before the place where they are called so that
     they can be masde static. Move the intrapixel functions and the
@@ -4763,6 +4763,8 @@ Version 1.6.9beta01 [December 19, 2013]
     segment of the DLL by 1208 bytes, about 0.6%. It also simplifies
     maintenance by removing the declarations from pngpriv.h and allowing
     easier changes to the internal interfaces.
+  Rebuilt configure scripts with automake-1.14 and autoconf-2.59(2013)
+    in the tar distributions.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/arm/arm_init.c b/arm/arm_init.c
index 098771781..271c6121d 100644
--- a/arm/arm_init.c
+++ b/arm/arm_init.c
@@ -90,7 +90,7 @@ safe_read(png_structp png_ptr, int fd, void *buffer_in, size_t nbytes)
          if (errno != EINTR)
          {
             png_warning(png_ptr, "/proc read failed");
-            return 0; /* I.e. a permanent failure */
+            return 0; /* I.e., a permanent failure */
          }
       }
 
diff --git a/arm/filter_neon_intrinsics.c b/arm/filter_neon_intrinsics.c
index 99e0a2cfa..e7a09f436 100644
--- a/arm/filter_neon_intrinsics.c
+++ b/arm/filter_neon_intrinsics.c
@@ -21,7 +21,7 @@
 
 /* libpng row pointers are not necessarily aligned to any particular boundary,
  * however this code will only work with appropriate alignment.  arm/arm_init.c
- * checks for this (and will not compile unless it is done), this code uses
+ * checks for this (and will not compile unless it is done). This code uses
  * variants of png_aligncast to avoid compiler warnings.
  */
 #define png_ptr(type,pointer) png_aligncast(type *,pointer)
diff --git a/png.c b/png.c
index 22788ed95..a611d5005 100644
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.6.8 [December 19, 2013]
+ * Last changed in libpng 1.6.9 [(PENDING RELEASE)]
  * Copyright (c) 1998-2013 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.)
@@ -773,13 +773,13 @@ png_get_copyright(png_const_structrp png_ptr)
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.6.9beta01 - December 19, 2013" PNG_STRING_NEWLINE \
+     "libpng version 1.6.9beta01 - December 22, 2013" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2013 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 "libpng version 1.6.9beta01 - December 19, 2013\
+      return "libpng version 1.6.9beta01 - December 22, 2013\
       Copyright (c) 1998-2013 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
diff --git a/png.h b/png.h
index a6e699cf5..1688eb88f 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.6.9beta01 - December 19, 2013
+ * libpng version 1.6.9beta01 - December 22, 2013
  * Copyright (c) 1998-2013 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 1.6.9beta01 - December 19, 2013: Glenn
+ *   libpng versions 0.97, January 1998, through 1.6.9beta01 - December 22, 2013: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -221,7 +221,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.6.9beta01, December 19, 2013, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.6.9beta01, December 22, 2013, are
  * Copyright (c) 2004, 2006-2013 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:
@@ -333,7 +333,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    December 19, 2013
+ *    December 22, 2013
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -401,7 +401,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.6.9beta01"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.6.9beta01 - December 19, 2013\n"
+     " libpng version 1.6.9beta01 - December 22, 2013\n"
 
 #define PNG_LIBPNG_VER_SONUM   16
 #define PNG_LIBPNG_VER_DLLNUM  16
diff --git a/pngpriv.h b/pngpriv.h
index afa9ed158..c2a1fa540 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -6,7 +6,7 @@
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * Last changed in libpng 1.6.8 [December 19, 2013]
+ * Last changed in libpng 1.6.9 [(PENDING RELEASE)]
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
@@ -135,7 +135,7 @@
 
    /* By default the 'intrinsics' code in arm/filter_neon_intrinsics.c is used
     * if possible - if __ARM_NEON__ is set and the compiler version is not known
-    * to be broken.  This is control by PNG_ARM_NEON_IMPLEMENTATION which can
+    * to be broken.  This is controlled by PNG_ARM_NEON_IMPLEMENTATION which can
     * be:
     *
     *    1  The intrinsics code (the default with __ARM_NEON__)
diff --git a/pngread.c b/pngread.c
index b02831b34..85c832345 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.6.8 [December 19, 2013]
+ * Last changed in libpng 1.6.9 [(PENDING RELEASE)]
  * Copyright (c) 1998-2013 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/pngrtran.c b/pngrtran.c
index 350eaad31..12181790d 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,7 +1,7 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.6.8 [December 19, 2013]
+ * Last changed in libpng 1.6.9 [(PENDING RELEASE)]
  * Copyright (c) 1998-2013 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.)
@@ -1134,7 +1134,7 @@ png_init_palette_transformations(png_structrp png_ptr)
    if (!input_has_alpha)
    {
       /* Any alpha means background and associative alpha processing is
-       * required, however if the alpha is 0 or 1 throughout OPTIIMIZE_ALPHA
+       * required, however if the alpha is 0 or 1 throughout OPTIMIZE_ALPHA
        * and ENCODE_ALPHA are irrelevant.
        */
       png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
@@ -1199,7 +1199,7 @@ png_init_rgb_transformations(png_structrp png_ptr)
    if (!input_has_alpha)
    {
       /* Any alpha means background and associative alpha processing is
-       * required, however if the alpha is 0 or 1 throughout OPTIIMIZE_ALPHA
+       * required, however if the alpha is 0 or 1 throughout OPTIMIZE_ALPHA
        * and ENCODE_ALPHA are irrelevant.
        */
 #     ifdef PNG_READ_ALPHA_MODE_SUPPORTED
diff --git a/pngwrite.c b/pngwrite.c
index 3d793e896..6259edf3a 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.6.8 [December 19, 2013]
+ * Last changed in libpng 1.6.9 [(PENDING RELEASE)]
  * Copyright (c) 1998-2013 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 210a4153a..ffd4f6d1c 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 1.6.0 [February 14, 2013]
+ * Last changed in libpng 1.6.9 [(PENDING RELEASE)]
  * Copyright (c) 1998-2013 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.)