diff --git a/winsup/doc/ChangeLog b/winsup/doc/ChangeLog
index 2bbdddd94..7e43523e1 100644
--- a/winsup/doc/ChangeLog
+++ b/winsup/doc/ChangeLog
@@ -1,3 +1,7 @@
+2010-02-05  Corinna Vinschen  <corinna@vinschen.de>
+
+	* new-features.sgml (ov-new1.7.2): Add grouping for printf/wprintf.
+
 2010-02-04  Corinna Vinschen  <corinna@vinschen.de>
 
 	* new-features.sgml (ov-new1.7.2): Add multibyte-awareness of regcomp
diff --git a/winsup/doc/new-features.sgml b/winsup/doc/new-features.sgml
index 629f74532..c98d392ae 100644
--- a/winsup/doc/new-features.sgml
+++ b/winsup/doc/new-features.sgml
@@ -46,6 +46,13 @@
   fnmatch(3), regcomp(3), regexec(3) calls are now multibyte-aware.
   </para></listitem>
 
+  <listitem><para>
+  printf(3), wprintf(3) families of functions now handle the grouping
+  flag, the apostrophe <literal>'</literal>, per POSIX-1.2008.  The
+  integer portion of the result of a decimal conversion (%i, %d, %u, %f,
+  %F, %g, %G) will be formatted with thousands' grouping characters.
+  </para></listitem>
+
   <listitem><para>
   New strfmon(3) call.
   </para></listitem>