Windows Vista SP2 and Server 2008 SP2 have been released to the public.

Jason Mick (Blog) - May 26, 2009 10:24 AM
DailyTech

Standalone installer hits public, Microsoft details workaround for install problem

Microsoft's Windows Vista has officially entered its Service Pack 2 (SP2) phase, with the release of the second service pack for the operating system to the public. Windows Vista SP2 -- beta and release candidate versions have been tested over past months -- brings many security and bug fixes, as well as some performance improvements. Among the most significant performance improvements are the inclusion of Bluetooth v2.1 and Blu-ray recording.
Accompanying the Vista pack is a Server 2008 SP2 release. The two SP2 updates are available together in a standalone installer. The installer is available in 32-bit and 64-bit varieties.  [Comments...]