A recap of a recent screening w/Van Dyke + Reiner in L.A.
No word on a DVD release, but plenty of anecdotes including when Van Dyke met Buster Keaton and how Mickey Rooney couldn't cross his eyes to play the part of Cockeye:
http://www.moveablefest.com/moveable_fest/2012/12/dick-van-dyke-carl-r einer-the-comic.html