Visual Studio 2010 RC is now available to MSDN subscribers.
http://weblogs.asp.net/scottgu/archive/2010/02/08/vs-2010-net-4-release-candidate.aspx
There are some know issues – one of them is Silverlight 4 projects are not yet supported. “We will be adding VS 2010 RC support for SL4 with the next public Silverlight 4 drop. If you are doing active Silverlight 4 development today we recommend staying with the VS10 Beta 2 build for now.”
by xamlgeek.dk
thomas martinsen 