all you people see is that it supposedly has 20MP.
People are disappointed if it's the same 20 MP sensor from 70D.
If it's a 20 MP sensor based on EXMOR or better technology, I am sure you won't find so many pages of rant.
Sometimes it is impossible to rise the MP count without changing the Layout of your chips. So, IMO, I could believe the rumors, that a rise in MPs to 24MP or more would afford an change in the manufacturing process - as we know from the computerindustry, where each 1-2 years an new manufacturing process needs to renew nearly the whole fabrication hardware.
The rumor was, that Canon is retaining to change their manufacturing hardware to maximise their profit.