With the specs listed, I really wonder if Canon started this project years ago with the development of the 7D...
Canon APS-C sensor: 22.2mm x 14.8mm
35mm Full Frame: 36mm x 24mm
Just going by the sensor dimensions, the 18 megapixel sensor on the 7D is equal to a 47.3 MP sensor when expanded to full frame 35mm. The leaked numbers of a 46MP sensor are just too close for coincidence.
My curiosity is piqued.
A number of us have been saying things like this for some time.