MSTest and the .NET Framework
+1 to everything that Brad Wilson said on this issue. The Visual Studio unit testing framework (MSTest) is moving into VS.NET Pro as opposed to requiring you to pony up for VS.NET Team Suite. This is good step, but unit testing should be a first class citizen of the .NET framework. The UI and related testing tools can still be a value-add for VS.NET.
Update: Apparently this was formally suggested in September of 2005 but was postponed. It is not apparent whether or not it has been reopened for Orcas.