This is an interesting time to be a photograph enthusiasts. The rapid developments in software and hardware of the mirror-less cameras is quite frankly amazing. It is not so interesting if you are Canon. They seem to be doing their own thing. The lack of interest (apparent or imaginary) or inability of Canon to change with the times is concerning. The half baked EOS M system which actual sells well in Japan is a poor excuse for a mirror-less system. It could even be forgiven if it was released around the same time as the Sony NEX system. But they learned nothing from Sony's early missteps. If the Rebel sales go to mirrorless Canon is poorly positioned. The camera market is shrinking. Canon could possibly profit by reducing the number of Rebel models to one. Consolidating features into fewer APC cameras. Lowering R&D cost.
I expect that Canon will eventual get mirror-less right. It could fill in the low end right along the Rebel cameras with one prosumer model (with EFV) so satisfy the critics. I do not thing they can do it without eating into there own Rebel sales. The question is when. I say get on with it already.
Canon OWNS the pro full frame Market. That will not change anytime soon.
I fully expect that Canon will release a true full frame rebel.
On a side note: (but I may be misremembering it was a long time ago.)
I vaguely remember reading an interview of one of the Canon executives. I read around 9 years ago. Most of it covered the recently released 5D. In it the Canon executive basically stated that he expected most DSLR to eventual be full frame. That as soon as the manufacturing could was perfected that ASPH would be fazed out. Eventual the full frame sensor could be cheep enough to put in a Rebel. He just shrugged when asked what would happen to the EF-s mount.
It basically covered Canons road map from then to the present. It was also part of a 10 year plan. So focusing on full frame is right in line with early Digital camera plans.
As has been pointed out by a few of us, until and unless mirrorless gets the form factor and battery life we're used to in DSLRs, we're not interested