SQL Server 2008 is finally released. I hope that means that SP1 for Visual Studio 2008 and the .NET Framework 3.5 is imminent...

Take a look at the official announcement, the new features and the complete documentation.

UPDATE: don't install it on your development machines yet, as Visual Studio 2008 RTM does not work together with the .NET Framework 3.5 SP1. We'll have to wait for SP1 of VS2008.