Mike Snow mentions the release of Silverlight Version 2 RCO with links to all the development tools and runtime bits.
Per Mike:
Version 2 of the Silverlight developer runtime along with the Silverlight Tools is now available. This release candidate will give developers the chance to convert their sites from Beta 2 –> Release before the final release of the runtime is out. Also, included below is a link to a patch that will upgrade Blend.
Visual Studio 2008 Tools RC0: http://go.microsoft.com/fwlink/?LinkId=129043
Expression Blend SP1 RC0: http://www.microsoft.com/expression/try-it/default.aspx?filter=prerelease
Windows Silverlight 2 Dev Runtime RC0: http://go.microsoft.com/fwlink/?linkid=129011
You can read the details from Mike on his blog here.