ShotenKobo posted a picture of a new Megadap M2RF Leica M-mount to Canon RF-mount AF adapter that will allow you to autofocus M lenses on Canon EOS R cameras. Currently, there are many M to RF adapters, but as far as I know, the Megadap M2RF will be the first autofocus adapter of this kind.
Similar adapters already exist for Nikon Z-mount – see previous coverage:
First reviews of the new Techart TZM-02 Leica M lens to Nikon Z camera autofocus adapter
Via CanonAddict