diff --git a/ANNOUNCE b/ANNOUNCE
index 3d5d002..78f129e 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.4.0beta23 - July 22, 2008
+Libpng 1.4.0beta24 - July 25, 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.
@@ -9,27 +9,27 @@
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.4.0beta23.tar.gz
-   1.4.0beta23.tar.bz2
+   1.4.0beta24.tar.gz
+   1.4.0beta24.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   1.4.0beta23-no-config.tar.gz
-   1.4.0beta23-no-config.tar.bz2
+   1.4.0beta24-no-config.tar.gz
+   1.4.0beta24-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp140b23.zip
-   lp140b23.tar.bz2
+   lp140b24.zip
+   lp140b24.tar.bz2
 
 Other information:
 
-   1.4.0beta23-README.txt
-   1.4.0beta23-KNOWNBUGS.txt
-   1.4.0beta23-LICENSE.txt
-   1.4.0beta23-Y2K-compliance.txt
+   1.4.0beta24-README.txt
+   1.4.0beta24-KNOWNBUGS.txt
+   1.4.0beta24-LICENSE.txt
+   1.4.0beta24-Y2K-compliance.txt
 
 Changes since the last public release (1.2.10):
 
@@ -252,9 +252,25 @@
   Revised makefile.mingw
   Prefer PNG_USE_PNGVCRD when _MSC_VER is defined in pngconf.h
 
-version 1.4.0beta21 [July 22, 2008]
+version 1.4.0beta21 [July 21, 2008]
   Moved local array "chunkdata" from pngrutil.c to the png_struct, so
-    it will be freed by png_read_destroy() in case of a read error.
+    it will be freed by png_read_destroy() in case of a read error (Kurt
+    Christensen).
+
+version 1.4.0beta22 [July 21, 2008]
+  Change "purpose" and "buffer" to png_ptr->chunkdata to avoid memory leaking.
+
+version 1.4.0beta23 [July 22, 2008]
+  Change "chunkdata = NULL" to "png_ptr->chunkdata = NULL" several places in
+    png_decompress_chunk().
+
+version 1.4.0beta24 [July 25, 2008]
+  Change all remaining "chunkdata" to "png_ptr->chunkdata" in
+    png_decompress_chunk(), and remove "chunkdata" from parameter list.
+  Put a call to png_check_chunk_name() in png_read_chunk_header().
+  Revised png_check_chunk_name() to reject a name with a lowercase 3rd byte.
+  Removed two calls to png_check_chunk_name() occuring later in the process.
+  Define PNG_NO_ERROR_NUMBERS by default in pngconf.h
 
 version 1.4.0betaN [future]
   Build shared libraries with -lz and sometimes -lm.