The Q2 2010 SP1 release of Telerik RadControls for Silverlight/WPF is available for download under your accounts.
All resources have been accordingly updated.
Check RadControls for Silverlight or WPF demos
You can check the Release Notes for a list of all the fixes and improvements we managed to include in this release:
RadControls for Silverlight Release Notes
RadControls for WPF Release Notes
RadControls for Silverlight Downloads
RadControls for WPF Downloads