Hey, same here. My 2020 M3 LR still on 2020.48.35.5. Checking almost every day to no avail. In the past year, my car got updates very quickly. I think a couple of UK YouTubers have received the update. According to TeslaFi there're M3 LRs with 2021 versions on the road. Not sure why you and I haven't received at least one of the recent updates.