Sensor stabilization was definitely one of the bigger feature omissions from the Canon EOS R if we go by the feedback we've received. Canon has always maintained that in lens stabilization is the best way to go, however, Canon themselves left the door open to the idea that the EOS R system may get sensor stabilization in a future body.
Northlight Images has uncovered a Canon patent showing sensor stabilization.
We think one of the challenges facing image sensor image stabilization from Canon is making it work with lens image stabilization and improving the overall performance.
Japanese patent application [2018-165756 (P2018-165756A)]