Update 220.127.116.11: Update for Windows 8. Assemblies did not change, only the project template did.
Update: 18.104.22.168: Reduced the depth of the installation path for VSIX packages, that was causing issues on some systems (path too long). The only change is in the installer and the VSIX. If you were able to install correctly, no need to install this version.
Update: 22.214.171.124 corrects a small issue with the binaries on new projects on Windows 8 (WinRT) only.
The issue with the installer is fixed, sorry for the problems folks
This version supports Silverlight 3, Silverlight 4, Silverlight 5, WPF 3.5 SP1, WPF4, Windows Phone 7.0 and 7.5, WinRT (Windows 8).
Support for Visual Studio 2010 and Visual Studio 2012 RC.