All the servers worldwide (Singapore, Redmond, California Server Farm, Dublin, and India) have been prepped and the public Beta 2 of Windows Vista is ready to download. There is no public release for Windows Server "Longhorn" as yet.
*PLEASE NOTE - These links may not be live just yet - so far the links are up and ready but the actual builds are not. Keep refreshing the page - should be live today*

Download here:
- (English x86)
http://download.windowsvista.com/preview/beta2/en/x86/download.htm
- (English x64)
http://download.windowsvista.com/preview/beta2/en/x64/download.htm
- (German (x86)
http://download.windowsvista.com/preview/beta2/de/x86/download.htm
- (German (x64)
http://download.windowsvista.com/preview/beta2/de/x64/download.htm
- (Japanese (x86)
http://download.windowsvista.com/preview/beta2/jp/x86/download.htm
- (Japanese (x64)
http://download.windowsvista.com/preview/beta2/jp/x64/download.htm

Source: Bink.ru