You can get similar transitions by replacing the ContentControls in RadDock's templates with RadTransitionControls. The only problem is to properly configure the new 3D transitions that we are going to ship with Q1... I cannot find the link that we blogged about them a few months ago.
the Telerik team
Registration for Q1 2011 What’s New Webinar Week is now open. Mark your calendar for the week starting March 21st and book your seat
for a walk through all the exciting stuff we ship with the new release!