Canon worries about canniblization, but someone else will eat their lunch if they are not careful.
Well, Nikon and Sony ate Canon's lunch, dinner, and elevensies with the introduction of D800 and D600 in a large bite and also with other ancillary nips here and bites there...
This only makes sense when one fairly takes into account that Canon is the big dog in the kennel...any stolen lunch, perhaps even a bite says something.
But Canon will prepare another spread no doubt. That's what these rumors suggest.