It looks like I guessed correctly. I will now pat myself on the back! The 70D will NOT be getting a 24 MP sensor. Hopefully the "new" 18MP sensor will outshine the 5 year old one used in all crop bodies up to now. Time will tell...I doubt it will even be a full stop of improved noise performance at high ISO, however much they try to push the "native" ISO range.
As for my own needs...I am just going to go full frame, and keep my old XXD crop body. I'm emotionally attached to it now.
The 7D2, or whatever it will be called, should get something completely different in my opinion. I know it will likely still be a 1.6x crop sensor, so this is NOT prediction, just my wish. I say it should be a 1.2x crop sensor (larger than 1.3x but smaller than full frame), with pixel size equal to 26 or 27 megapixels on a full frame (so they would be ever so slightly smaller than the 1D4's...while the sensor is larger than 1.3x, with around 21-22 MP resolution). However, this would have the potential to be a 1DX killer for sports shooters, and would certainly be priced similar to a 1DX....it would be a 1 series body...so I guess really what I am talking about is a mythical "1D Mark 5", or "1DX2".
I do feel a future sports 1 series will go back to some kind of crop sensor, because reach is almost always preferred over wide angle, for sports. And the next generation high MP full frame 1 series is on the horizon, for studio and similar needs. I kind of agree with some of the sentiment from the Nikon trolls on here...the 1DX went full frame because Canon wasn't ready to introduce a high megapixel full frame 1 series body as early as they had wished to. The very large pixels of the 1DX certainly helped Canon climb to the top of the high ISO performance pile...at least with current bodies of "adequate" pixel count (meaning I'm calling a 12 MP full frame sensor inadequate in its resolution...even though the ISO noise is superior in the 6400 to 12,800 range).