The design looks like a markatable product rather than an imaginary idea only (esp for the details on the lens mount)
http://nikonrumors.com/2010/05/30/nikon ... japan.aspx
Bad news is that it should use a 1 inch sensor, which is around 2.5~2.7x on the focal length of 135.........
Good news is that the lens should be quite small (as some of us wish......), and some ultra-fast lenses like f/1.2 should be made possible.....
Also the 1 inch sensor would mean all 16mm cine lenses would be fried up in the next wave!