A quick note to let you know that Knowledge Base article http://support.microsoft.com/kb/914387 "How to configure daylight saving time for Microsoft Windows operating systems" reflects the manual changes and additions DST and TZ.  KB 914387 should contain all DST changes made since RTM.
 
The cumulative DST packages for Windows have been released to the DLC for supported versions of XP, WS03, Vista and Server 2008.
http://support.microsoft.com/kb/951072

The next release of the 2008 Cumulative Time Zone Update for Windows (and other products) is scheduled to release in Nov/December. 
 
The above packages will be pushed out via Windows Update next month.

More info to be available soon at Microsoft DST & Time Zone updates