According to recently rumors on CR, Canon now testing the upcoming Canon EOS R Mark II by a small group of professional Canon photographers.
The Canon EOS R Mark II will coming after the high megapixel EOS RS which will be announced mostly like at CP+ 2020 in February. The official announcement date could be ahead of Photokina 2020 in May. It will have similar design as Canon EOS RS. Specs of Canon EOS R Mark II will be available soon, stay tuned.