Visual Studio 2010 Feature Pack 2 is now available.  See the following blogs for more details.

http://blogs.msdn.com/b/amit_chatterjee/archive/2010/11/16/visual-studio-2010-feature-pack-2-released-new-set-of-testing-capabilities.aspx

http://blogs.msdn.com/b/bharry/archive/2010/11/15/feature-pack-2-is-available.aspx

 

See some quick videos of testing features.

http://blogs.msdn.com/b/mathew_aniyan/archive/2010/11/16/visual-studio-2010-feature-pack-2-videos.aspx

 

Some additional blogs which dwell deeper into Silverlight features.

http://blogs.msdn.com/b/tapas_sahoos_blog/archive/2010/11/16/understanding-the-search-logic-for-silverlight-controls-in-coded-ui-test.aspx

http://blogs.msdn.com/b/tapas_sahoos_blog/archive/2010/11/16/fetching-property-of-a-silverlight-control.aspx

http://blogs.msdn.com/b/tapas_sahoos_blog/archive/2010/11/16/why-does-selection-of-an-item-getting-recorded-as-a-mouse-click-action.aspx

http://blogs.msdn.com/b/tapas_sahoos_blog/archive/2010/11/16/why-does-coded-ui-test-playback-fail-to-scroll-the-silverlight-control-into-view.aspx