Reportedly, Xiaomi will offer MIUI 13 upgrades to ten smartphones this month. Smartphones as old as the Mi 10S could be upgraded, along with the Mi 11, Mi 11 Ultra and the Redmi K40 series. The Redmi Note 10 Pro 5G could be in line for MIUI 13, too.
https://www.notebookcheck.net/Stable-MIUI-13-updates-to-arrive-for-ten-Xiaomi-and-Redmi-smartphones-before-the-end-of-the-year.585098.0.html