The Cambo Actus AC-785 bayonet kit for Leica M-mount is now available online (initially introduced last year) – it is used to hold a Leica M-mount camera and mounts to the Actus view camera:
The Actus enables tilt, shift and swing and gives access to Schneider and Rodenstock large format lenses.
You can see a review of the Cambo Actus mounted on a DSLR camera over at NikonRumors: part 1 and part 2.