Check out this Canon EOS R1 camera mockup courtesy of Reddit user mirajoba:
Canon is still expected to release their EOS R1 flagship camera - the company already mentioned on several occasions that the Canon EOS R3 is not their top-of-the-line mirrorless camera:
Reminder: Canon still has to announce their EOS R1 flagship camera
Confirmed: The Canon EOS R3 is not the flagship mirrorless camera
The Canon EOS R3 is not the flagship camera, the R3 sensor may not be produced by Canon
