* etc/NEWS (Changes in Specialized Modes and Packages in Emacs 23.1):

  Document bookmark.el at 2008-06-25T16:51:33Z!monnier@iro.umontreal.ca format upgrade.  (Bug#3375)

etc/ChangeLog

+2009-10-09  Karl Fogel  <karl.fogel@red-bean.com>
+
+	* NEWS: Document bookmark.el at 2008-06-25T16:51:33Z!monnier@iro.umontreal.ca format upgrade.  (Bug#3375)
+
 2009-10-04  Michael Albinus  <michael.albinus@gmx.de>
 
 	* NEWS: New function copy-directory.

etc/NEWS

@@ -993,6 +993,12 @@ identify cited keys in BibTeX entries, used by `bibtex-find-crossref'.
 
 *** Command `bibtex-url' allows multiple URLs per entry.
 
+** Bookmarks
+
+*** bookmark.el saves bookmarks in a pre-Emacs-23-incompatible file format
+bookmark.el can read a .emacs.bmk file saved by an older Emacs, but an
+older Emacs cannot read one saved by Emacs 23.
+
 ** Calendar and diary
 
 *** There is a new date style, `iso', essentially year/month/day.