Service Pack 2 for Windows Server 2008 and Vista is slated for the first half of 2009, long before Windows 7 is ready for prime time. Officially, Microsoft says that a more concrete date will be chosen based on the feedback the company receives during the service pack beta testing process. Soon after the first beta build
was sent out, Redmond told testers that it was planning a Release Candidate build and a final build afterward, but did not give any details beyond that. A bit later, a rumor sprung up
saying that the SP2 Release Candidate was coming in February and that SP2 should RTM in April. That rumor has now received an update from its source, Tech ARP
It looks like Microsoft has delayed the release of their release candidate and RTM builds by a month. Replacing the original release candidate build is something they call a "release candidate escrow build." We have no idea what that means. If you know, please let us know. The actual release candidate build has now been delayed till March. The RTM build of Service Pack 2, which was originally scheduled for April, has been delayed until sometime in Q2, 2009. That means a launch in either May or June, barring any further delays.
Full Story: Rumor update: SP2 for Server 2008 & Vista delayed