After a lengthy development cycle that included delays and furious testing, Microsoft has finally given the public Service Pack 2 for Windows Vista and Windows Server 2008 (final build is 6.0.6002.18005). You can download the installer from the Microsoft Download Center: 32-bit (348.3MB), 64-bit (577.4MB), and IA64 (450.4MB). There's also an ISO image (1376.8MB) that contains these installers. The installers will work on English, French, German, Japanese, and Spanish versions of either Vista or Server 2008. Other language versions will arrive later...

More Info: http://arstechnica.com/microsoft/news/2009/05/service-pack-2-for-vista-and-server-2008-finally-available.ars

............................................................................................