Never gonna happen. Canon wants to sell you a whole system. They bailed out of RF technology 30 years ago because they saw the wall: most of the world wanted SLR's- with auto focus, auto exposure, auto modes, program modes. In fact, just make it a stick-it-in-your-pocket-7-Megaschnickel wunder P.h.D. camera. In short, most of the world (Canon's market) want making pictures to be easy.
We RF shooters are a different breed, and not in the majority, of course. This will have a to change a great deal before a company like Canon sees any incentive to jump into a market with 75+ years of choices in lenses, for which they will have to make a huge investement to develop a body. Think about that proposition for a
moment, too: of course they could fit a chip behind the lens- we've seen them do it. But full frame? Behind an RF lens, with the short mounts used by the LTM/M system? We know what a pain this will be- the 5D's chip won't do it without some serious work arounds, both hardware and software. But even if they manage that, they will still have to develop a rangefinder, and mechanically couple if to the lenses. Who here thinks of Canon as masters of technically precse mechnical instruments? Yeah they used to be, but that's dusting of not only machines they probably covered up or junked 25-30 years ago, not to mention bringing the operators and designers out of retirement, or hiring new ones. Either way they are starting from scratch. And all this for a camera that takes a lens mount they will never hold a patent on? One that several other manufacturers are selling excellent lenses (and also some bargain basement prices lenses!) for?
I could go on, and believe me, I'd love to see it, but- Never gonna happen.