Before someone asks when it will appear in a DSLR, here is their current plan. its a video sensor BTW.
It is likely why Canon has recently announced a move into the video surveillance field, but it will be pricey. Military and law enforcement use are the most likely first adopters, people who will pay $100K + a copy.
In addition to astronomical and natural observation, Canon is looking into applying this CMOS sensor to medical research purposes as well as surveillance and crime-prevention equipment.