According to trusted source for CR, the long rumored Canon EOS 5D Mark IV is already in testing for selected photographers. The announcement date for Canon EOS 5D Mark IV is around Q4 of 2015.
The specs of Canon EOS 5D Mark IV hasn’t leaked yet, it is still unknown if 5D Mark IV will use a new DIGIC 7 processor. And there were different rumored specs list for Canon EOS 5D Mark IV before (Rumored Specs 1, Rumored Specs 2, Rumored Specs 3).
And rumored Canon EOS-1D X Mark II will be released in the Winter of 2016, not soon after EOS 5D Mark IV released.
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