Tim Heuer has posted some videos that will help you undestand some of the new features coming with Visual Studio 2010 Feature Pack 2.
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In the release of Visual Studio 2010 Feature Pack 2 one feature that might be interesting to Silverlight developers is the introduction of support for the coded UI test framework and Silverlight 4 applications, specifically:
• Use Microsoft Test Manager to capture and playback action recordings for Silverlight 4 applications
• Create coded UI tests for Silverlight 4 applications with Visual Studio 2010 Premium or Ultimate