That fix was part of 2.5.3rc1....
diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
index 7d326c4..001c6d7 100644
--- a/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@ -1,5 +1,5 @@
What's New in Python 2.6.4rc1
-==========================
+=============================
*Release date: XX-Oct-2009*
@@ -8,13 +8,13 @@
*Release date: 02-Oct-2009*
-- On OS X IDLE 2.6 shows two Preference menu items. Issue6951.
-
What's New in IDLE 2.6.3rc1?
============================
*Release date: 28-Sep-2009*
+- On OS X IDLE 2.6 shows two Preference menu items. Issue6951.
+
- Windows: Version string for the .chm help file changed, file not being
accessed Patch 5783 Guilherme Polo