Today we released the Beta versions of the Service Packs that will be shipping for .NET 3.5 and Visual Studio 2008.
Please note that the betas are intended as a mechanism to allow early testing and feedback. As a beta release, it is recommended that you only install the service pack on test machines.
There are several bug fixes and enhancements, the most notable ones I'm listing in here.
Update: Review the complete, extensive, detailed list of enhancements on ScottGu's blog. As always, Scott's post gives you all possible information you need on this.
Note that there are a few known incompatibilities with this service pack including: Expression Blend, the Silverlight 2 Beta 1 SDK, and the Microsoft Silverlight Tools Beta 1 for Visual Studio 2008. A new version of Expression Blend 2.5 March Preview has been released here that is compatible with this service pack.
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