Not so sure I'm on board with the split strategy. I don't think a camera at under 3K (and they'll probably be within 100.00 of Nikon's price) is able to fully compete in any one area substantially and sufficiently to be rendered a$3000.00USD specilized tool which only does one thing well.
if it did shoot hi-res as well as a medium format, they could charge 5K and most rational people would consider it a bargin. If it did shoot video as well as the C300, it would be 5K and we would open our wallets faster than a sorority girl in the AM MCD drive thru.
The most reasonable proposition is that they will stretch the newest technology as far as possible - probably sensor - and probably similar to the nikon still/video combo set up, and then pile on tons of otherwise last generation technology which was held sacrosanct until well distributed horizontally and vertically in the consumer market. This way they will get the most competitive and paid for technology at the core, and then cover all their bases with the silly stuff such as facial rec and built in levels.. ect.ect.
It's not going to be 22MP. I'm going to leave bet myself $100.00 that it will be over 30MP. In this regard, we shouldn't care about technology, or DR, or any photo blather, it's just the competitive market place demands it, and the technology is priced and avaivable.
Now... on to the happy stuff. What's more likely if Canon is to get a leg up (weird phrase eh?).
1) Entirely New Sensor Tech (more likely in 2013, however posible) - big competitive advantages.
2) New Recording / Transmitting / Processing Chip Tech
3) New Body Form
4) Entirely New Focusing / Optical Technology
5) New Software Technology
So which of these is the most likely tit for tat announcement now that Nikon has made their Chess move? I pick in the order of first to last 5, 2, 1, 4, 3. If Nan, or None of the Above - then the only other option is to expand one of the catagories further or piling on other old goodies already with proven demand.
Anyhow, this is all fun. Hope you like software and tons of pixels!