Silverlight 3 projects are supported with the Visual Studio 2010 Release Candidate build – however Silverlight 4 projects are not yet supported.
We will be adding Visual Studio 2010 Release Candidate support for Silverlight 4 with the next public Silverlight 4 drop.
If you are doing active Silverlight 4 development today we recommend staying with the Visual Studio 2010 Beta 2 build for now.
Tim Heuer has also blogged about this limitation here.
Have a great day,
Karl Shifflett Visual Studio Cider Team
Thankx for the information! Could you state a timeframe when you plan to make it available?
The Silverlight 4 release schedules are not public yet. When they are published, we will post the infomation on this blog.
Hi Karl. Thanx for your efforts. I have a question related to Silverlight 3 and the WCF RIA Services. Is it possible to install the last WCF RIA Preview to work with VS 2010 RC?
Tim Heuer has a question and answer blog post that covers Silverlight and the Release Candidate.
Please have a look at this blog post: