BMW has just filed a trademark application for the X8 M model name. This could signal that we will be seeing a new top of the line M SUV, or BMW could be filing it for name protection purposes (to reserve the right to use anytime in the future).
As for the regular G09 X8, according to our
future model info thread, it's likely to start production in July 2022 with an M45e as the entry level model. Whether it will be bookended by the X8M will be interesting to see!