After Sony announced the A7R IV, Canon lost its full-frame sensor megapixel count crown. The new Sony comes in at 61mp, eclipsing Canon's EOS 5DS & EOS 5DS R duo, which have a 50.6mp full-frame sensor.
It has been rumored in the past that Canon will eclipse 70mp with their EOS 5DS replacement and that it will come to the EOS R system and not the EOS DSLRs. So that means no DSLR replacement for the EOS 5DS and EOS 5DS R.
We were told recently that Canon will indeed “return to the top of the megapixel count for full-frame sensors” with the release of the EOS RS (we're guessing on the name).
There have been two sensors tested in the new EOS R body, and it's possible that the camera may come with a sensor over 80mp. The source noted that Canon is about to release brand new advancements in sensor technology and has “caught up to Sony”. What that means is unknown at this time.
The source did say that Canon will be “getting into the spec wars”, which will be music to the internet's ears.
More to come…