Service Pack 3 for Windows Xp is now available for download on the web and will be rolled out to automatic updates by June 30th. The update adds compatibility between Server 2008 and Vista. There are also some security and network improvements.
Update: It seems that XP SP3 will be delayed for a while longer. Not a Microsoft product being delayed, that’s unheard of. It seems that at the last minute a issue was found with Point of Sale software that Microsoft makes that runs on XP.
Source: The Register