Xiaomi is now expanding its Android 11 rollout to the Mi 9T. The flagship killer is currently receiving the OS upgrade, albeit only in global model guise. The OTA doesn't deliver MIUI 12.5, however, so owners will have to wait a while longer for that. The update weighs in at about 2.4 GB.
https://www.notebookcheck.net/The-Mi-9T-is-now-receiving-the-Android-11-update-globally-but-MIUI-12-5-remains-elusive.541568.0.html