There's big news afoot today for all of you SQL Server 2008 fans..
The CTP program strikes me as a real win/win for all participants. You get to "kick the tires" on a new version of SQL Server and even offer input which will materially impact the direction of the product, while Microsoft gets terrific feedback very early in the product development cycle. This input is a great resource for the product team as they endeavor to prioritize their work.
I hope you'll download and install the new CTP at your earliest convenience. Enjoy!