I am still not convinced the 7D would be 12Megapixels, full frame and with a feature set (AF, fps, etc) similar to the 5Dmk2.
Nikon already has the D700, probably a D700s in the pipeline (more pixels, video), and Sony will have a high pixel count full frame option soon at a low price point.
Only option I see for Canon with this 7D spec is to price it much, much lower than the competition. Maybe that is their thinking.
We should know in a week or so.....
Sean