I don't see what is differentiating these specs from anything that is on the market already, namely sony.
At best, these specs will end up being a NEX type camera that has a Canon Mount. That is great for diehard Canon users, but i'm not excited enough about it to consider that over anything already on the market.
If I were to be interested in APS-C mirrorless camera, it would have to have super quick AF(like the Nikon 1,) a built in flash, hopefully a built in viewfinder, and have an F2.8 Kit lens all for around 1000 bucks at most.
That's probably a dream, but for my uses, APS-C is basically dead. If the above camera was made, I may consider it as a second camera to a future FF mirrorless or an RX1.
Now, if Canon would step up and make a FF mirrorless(like the RX1 with a 24-70(or 24-55mm) zoom, or a mirrorless FF with interchangeable lenses, and kept the cost around $2k or 3K with a decent kit lens or fast prime, well, i'd probably pre order!