First off, MF is a niche market with no economy of scale. A CMOS MF camera will probably cost about the same as a CCD MF camera. Not to mention you are still going to have to buy the H series lenses, which are not "Canon" prices.
Second, I do not see any specs of the sensor listed other than it being 645 size. Will the sensor be 14-bit, or has Hassy made a huge advance in CMOS tech and created a 16-bit chip?
My guess is that it will be 14-bit, which means you are going to have a trade off. Stick with the CCDs, get better color but only be able to shoot at base ISO. Or go with the CMOS, color is not as good and you can not push the images as much, but you can shoot faster in more varying lighting conditions. (For me, the CCDs would be the clear choice, since I always use a tripod anyway. But I can see the appeal of faster speeds for many.)
Another question to be asked is will the auto focus be better? I think one of the advantages with shooting DSLRs handheld for fast on-the-fly work is the auto focus systems. If this is addressed, I can see it being very successful. If not, most of who look at this will probably be photographers who light everything perfectly anyway and prefer shooting at base.