After rolling out the Android 11 update to the Poco X2 and Mi Note 10 Lite last month, Xiaomi is now seeding a similar update to the popular Redmi Note 9S. The update is based on MIUI 12, as expected, and is slowly arriving for global versions of the phone.
https://www.notebookcheck.net/The-Redmi-Note-9S-and-Mi-10-Ultra-are-now-receiving-Android-11.517796.0.html