While some people are complaining as you describe, other continue saying "How could they put the same sensor? ", which is kind of pathetic. However, lets forget those people and focus on the possibilities of the all-new 7D MKII sensor!!
Indeed. But let us not forget the all new 18 MP APS-C sensor in the T4i/650D (all new because of Hybrid CMOS AF) or the all new 18 MP APS-C sensor in the SL1/100D (all new because of Hybrid CMOS AF II).
Good point. But given that there is no new technology advertised (that I can see, that is), is it fair to assume the "newness" will come from the actual sensor? I sure hope so.
Perhaps. Canon had a patent publish recently on improved DPAF for use in AI Servo AF, and now the 7DII has DPAF in AI Servo AF. I'm not sure if that required a hardware tweak to the sensor, but if so, that could be what's 'all new'.
According to Dave Perry of Canon UK in the YouTube video link posted in this thread, the 'all new sensor, different to the 70D ' is............micro lenses.
Here's the link again for anyone interested.