That Windows Vista / Server 2008 Service Pack 2 that hit Release Candidate status last week? You can now download and try for yourself, should you feel inclined and not patient enough to wait for the final version that's rumored for sometime this quarter. It's available for Vista x86 and x64 platforms and Server 2008 in x86 / x64 / IA64 varieties. Of course, anyone keeping this in tuned to the going-ons at Redmond probably already installed Windows 7 beta, but if you kept Vista and want Bluetooth 2.1 support and the ability to record data to Blu-ray discs, now's your chance.
Read - Windows Blog announcement
Read - Download Service Pack 2 RC