Today the first publicly available CTP for the next version of SQL Server was released.  It will be called SQL Server 2008, it was formerly known by its codename - Katmai. 

 You can download the CTP here:  https://connect.microsoft.com/sqlserver?wa=wsignin1.0. 

You can also see a webcast by David Campbel here:  http://msevents.microsoft.com/cui/WebCastEventDetails.aspx?EventID=1032341071&EventCategory=2&culture=en-US&CountryCode=US.

Enjoy!

Reed