A canon wireless mobile adapter like the Nikon WU-1a is good enough for me for the time being...
I'd love to see this happen. I've been longing for a feature like this for quite awhile.
Speculation on how long it might take to get to the 5Dm3 or 7D? Hopefully it's just a wireless mobile adapter and is mostly camera agnostic, as that would make the most sense.
5D mark III, 7D, Sigma 12-24mm II, TS-E 24mm f/3.5L II, 24-70mm f/2.8L II, Sigma 35mm f/1.4, Sigma 50mm f/1.4, 70-200mm f/2.8L IS II, 85mm f/1.2L II, 100mm f/2.8L, 135mm f/2L, 2x TC III