Can RadControls 2011 Q3(for Silverlight) used in Silverlight 5?

[Jimmy]

Silverlight 5 officially released today, I want to consult Radcontrols silverlight 2011 Q3 can be upgraded to Silverlight 5?

[Vlad]

Hello,

 Indeed you can use our Q3 2011 release with Silverlight 5. With our upcoming service pack (after a week) we will release native Silverlight 5 binaries as well. 

Best wishes,
Vlad
the Telerik team

[Vincenzo Bonsangue]

I have recently downloaded RadControls for Silverlight Q3 and using them with Silverlight 5, it seems to work, but when I try to do an Update Service Reference I get a missing reference to System.Windows for Silverlight 4 version. if I remove all telerik references, the Update Service Reference works... any suggestions.