It's been a long time, but AFAIK they are still working on it. Word has it they haven't dropped the plan. If I was to do a careful estimate, photokina 2012 would be my guess.
I finally assembled a Horseman SW-DII rig with the 24mm Schneider XL and the Sinar eMotion 75LV as the wide angle end of my Hy6 set-up. Perhaps a little bit more weight and camera, but probably the way to go in terms of image quality. And price as well, I am afraid... And wide angle reach. This particular combination equals a 20mm wide angle in 35mm terms. Great match for either the 50mm AFD or the 40mm SA in terms of focal length stacking.
