well, for a 2014 announcement, the bare minimum in sensor performance Canon needs to deliver in a 7D successor is the Nikon D7100 ... 24 MP, no DPLF (AA-Filter), excellent IQ and very good DR - more than 1 step up from Canon's pre-historic 18 MP APS-C sensor!
If Sony/Nikon can "cram that many pixels" onto a APS-C sensor and get excellent IQ from it, so should Canon. Crop 1.6x vs. 1.5x makes hardly a difference in real life. If Canon can't even achieve that much, they might as well pack up their entire APS-C business and call it quits.
That's why I absolutely expect a 24MP (or maybe 26MP) sensor in the 7D II. Of course with dual pixel-AF, plus an (even) better phase-AF module. Slightly faster too ... 9 or 10 fps. WiFi, GPS built-in and also [finally!] a RT radio wireless flash controller. After all, the 7D was the first ever Canon EOS camera to include an [optical] wireless speedlite master controller. Plus a fully articulated, touchscreen LCD - which Canon has learned to make some time ago already (EOS 650D). Plus some video-optimized stuff, bingo! No really innovation needed.
Price tag? USD/€ 2199,- ... in line with Canon's pricing decisions in its more recent history. ;-)