diff --git a/ANNOUNCE b/ANNOUNCE
index f6db0514936212c055ae86c067c43b9515788c81..8df916f8d8130ed65edb9bd068a23065c826ae72 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -110,7 +110,7 @@ Version 1.5.7beta05 [(PENDING RELEASE)]
 Version 1.6.0alpha01 [November 24, 2011]
   Added example programs for the new 'simplified' API.
   Moved pngvalid.c into contrib/libtests
-  Rebuilt Makefile.in configure with autoconf-2.68
+  Rebuilt Makefile.in and configure, etc., with autoconf-2.68
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
 (subscription required; visit
diff --git a/png.h b/png.h
index 0c652e3409a6e018f9aabc369485ae141b0247b7..ced8dcbca026b1195a91168ca531f2406ae11f29 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.6.0alpha01 - November 23, 2011
+ * libpng version 1.6.0alpha01 - November 24, 2011
  * Copyright (c) 1998-2011 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 1.6.0alpha01 - November 23, 2011: Glenn
+ *   libpng versions 0.97, January 1998, through 1.6.0alpha01 - November 24, 2011: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -196,7 +196,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.6.0alpha01, November 23, 2011, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.6.0alpha01, November 24, 2011, are
  * Copyright (c) 2004, 2006-2011 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:
@@ -308,7 +308,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    November 23, 2011
+ *    November 24, 2011
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -374,20 +374,21 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.6.0alpha01"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.6.0alpha01 - November 23, 2011\n"
+     " libpng version 1.6.0alpha01 - November 24, 2011\n"
 
 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
 
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
-#define PNG_LIBPNG_VER_MINOR   5
-#define PNG_LIBPNG_VER_RELEASE 7
+#define PNG_LIBPNG_VER_MINOR   6
+#define PNG_LIBPNG_VER_RELEASE 0
+
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
  */
 
-#define PNG_LIBPNG_VER_BUILD  02
+#define PNG_LIBPNG_VER_BUILD  01
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -412,7 +413,7 @@
  * version 1.0.0 was mis-numbered 100 instead of 10000).  From
  * version 1.0.1 it's    xxyyzz, where x=major, y=minor, z=release
  */
-#define PNG_LIBPNG_VER 10507 /* 1.5.7 */
+#define PNG_LIBPNG_VER 10600 /* 1.6.0 */
 
 /* Library configuration: these options cannot be changed after
  * the library has been built.