The future of EOS M ... none.
In my opinion Canon should (a) chuck the EF-M system, (b) join the m4/3 consortium, and (c) make a functional EF-to-m43 translation adapter.
Huh?? Doing that makes no sense at all. It would put them at the mercy of Olympus and Panasonic, mostly Olympus. Canon would still have to introduce lenses, although maybe (repeat: maybe!!) not as many as with the EF-M system. Canon 4/3 camera owners might buy other manufacturers' lenses instead and Canon would have to guarantee that Canon bodies work with their lenses and their bodies work with Canon lenses. What a mess!
Better for Canon to introduce (1) better EF-M bodies, (2) some very small native lenses, perhaps eight total, and (3) an extremely high quality EF-to-EF-M Metabones Speed Booster-type adapter, except with a 1-1/3 stop improvement.
I own a G10. I want one part of the EF-M system to evolve into something the same size (or slightly larger) but with much better high ISO image quality.