The Canon EOS 5D Mark IV is Canon’s most popular professional full frame DSLR camera released in 2016. According to recently rumors on CR, Canon is still planning to release the Canon EOS 5D Mark V to replace this camera.
The Canon EOS 5D Mark V is expected to have similar specs as upcoming EOS R Mark II. Both cameras are expected to be announced in late 2020 at the earliest. And Canon EOS 5D Mark V could be the last DSLR camera of 5D series.