Your question seems to be related to WPF, but please note that you have created this thread in the RadCarousel for WinForms forum section. Please create a new thread in the appropriate forum section. This will allow those of our community who are interested in the same topic to find it more easily.
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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.