it's official, Windows Server 2008 (a.k.a Longhorn) was announced at WinHEC in Los Angeles. They keynote has a few cool demos and can be watched here (Windows 2008 details starts around 26 mins). Eweek has done a good summary of the launch; I love their title – Microsoft: Hardware Trends Create 'Perfect Storm'. Have few mins, you can take it for a spin using the TechNet Virtual labs.

.