Thank you for writing.
We are currently experiencing some technical issues and this is why the documentation is not yet uploaded. Our team is working on this issue and we will upload the new content as soon as possible.
Please excuse us for the introduced inconvenience.
the Telerik team
Q2’11 SP1 of RadControls for WinForms is available for download (see what's new); also available is the Q3'11 Roadmap for Telerik Windows Forms controls.