I hope not. That will make it not even coat-pocketable.
im not sure if "pocketable" is a concern for canon when it comes to the new mirrorless camera.
APS-C is not the way to go then. the body can be small but as you see on NEX.. the lenses are not.
they will sure try to make it smaller then the SX1... but i would not be suprised when it resembles a bridge/DSLR look.