"This update supersedes and replaces update 941898. (Update 941898 was released in August 2007.) This update includes daylight saving time (DST) changes that were signed in to law after update 941898 was created. If you have already applied update 941898, read the descriptions of the specific time zone changes that are discussed in the "More information" section to determine whether you should apply this update."
Microsoft has released a new DST update for Windows Mobile that covers changes to Arabic Standard Time and Australian Central/Eastern/Tasmania Standard Time. The latest update is cumulative, so it includes timezone changes featured in previous DST updates. Hit
Microsoft's Knowledge Base for further information, along with the desktop and device installers for Windows Mobile 5.0 and 6.