In any case, as cool as this sounds, it’s perfectly clear that this is not an official Star Wars project in development. Besides, considering that Disney and Lucasfilm keep Star Wars as family friendly as possible and never venture past the PG-13 realm when it comes to violence, themes, etc, the chances of an R-rated Star Wars movie ever being made are extremely slim. But one can hope, right?
Article source: https://www.cinemablend.com/news/2491660/no-doctor-stranges-director-isnt-actually-making-a-star-wars-movie-but-his-idea-is-still-great