According to CR, Canon will release a total of 4 new full frame cameras in 2020 full frame camera roadmap.
The second one is Canon high-megapixel full frame mirrorless camera, could be named Canon EOS RS, will be officially announced in February, ahead of CP+ 2020.
The third one is a Canon full frame mirrorless camera price below the Canon EOS RP, could be named Canon EOS RM. Last year, Canon has already confirmed that this kind of camera is a possibility. Several compact and cheap RF lenses will coming along with this camera.
The fourth one is a Canon full frame mirrorless camera still a bit of a mystery. This camera could be a sports/speed body, perhaps with a lower megapixel sensor and aimed at the Sony a7S line of cameras.