Xiaomi is slated to launch a direct successor to the Mi 11 Ultra that might also have a 50MP main rear camera. Now, a reliable leaker claims that this "12 Ultra" will come with not just 1 but 3 sensors of this resolution. This, apparently, will give the putative flagship secondary functions such as ultrawide-angle shooting at a top-quality resolution.
https://www.notebookcheck.net/The-Xiaomi-12-Ultra-is-slated-to-launch-with-a-triple-50MP-camera-system.557852.0.html