Canon Working on RF 200-500mm f/4L IS USM & RF 400mm f/4 DO IS USM Lenses

Canon will soon announce the EOS R3 (Development announcement), RF 400mm f/2.8L IS USM Lens, RF 600mm f/4L IS USM lens. According to CR, Canon is working on more super telephoto lenses for Canon RF mount. Below are rumored lenses coming next: