There are actually three questions
1. Can Canon deliver this sensor
2. Should Canon deliver this sensor
3. Will Canon deliver this sensor
Only the first question has anything to do with the technology. Unfortunately, the second question is the limiting factor. Canon may be technologically capable of delivering this sensor, but it the marketing/production/sales numbers don't add up, all the technology won't matter.
Assuming that the first two questions are yes, the third question may dictate that they will do this in 2-3/3-5 years from now.
I think gone are the days when cameras were limited by technical capability. It is all about the business case. And that's a good thing.
I'm sure canon can do it. And in my opinion it will do it quite soon.
You can notice, that canon and nikon lineup doesn't have equal cameras. Yep, they're quite close, but I see it goes like:
D3100-600D-D5200-60D-D7100-7D for crop cameras one by one. Same for Fullframe cameras, but it's easier to show with bigger range of cropped.
Second thing you can notice, that canon and nikon got some cycles. Say 2-4 years. Reason? Same - marketing.
When 5d2 came out it was a deal-breaker. Great performance, 21mp. Hard to compare with D700. Yep, megapixels doesn't matter that much, as people believe, but we all know that 5d2 sell wery well.
4 years later Nikon makes D800 and canon stays with 5d3(which is cool, but difference between 5d-5d2 and 5d2-5d3 is not that big).
Canon is upgrading their lenses, from tele(easiest to design) to wide to II versions(70-200 II, 24-70II) or adds IS (24-28-35 IS, 16-35 IS) and they all have great sharpness and performance. I think canon will announce some high-MP camera if 1-2 years, as well as upgraded primes.
This change of leadership easily falls to 4 year cycle. Later we'll see some nikon on top.
Companies makes a bigger profits, if the leader changes with time, this makes users go to one side or another.
Fortunately now is canon turn. Unfortunately, previous announces makes me think, that price will be quite high.