While still distributing the Android 11 update to the Mi 10 series, it seems Xiaomi has already set its sights towards the popular, mid-range Snapdragon 720G-powered branch of the Redmi Note 9 family. Yes, it appears that the Redmi Note 9 Pro is now receiving Android 11. In India, at least.
https://www.notebookcheck.net/Android-11-update-surprisingly-arrives-for-the-Redmi-Note-9-Pro.504673.0.html