MIUI 12.5 with Android 11 could be next update for Redmi Note 9 series
Update: Taiwan, EEA, Russia, Indonesia, Turkey, and Global] Xiaomi Redmi Note 9 MIUI 12.5 update brings various new features, major improvements - RPRNA
Xiaomi Redmi Note 9 MIUI 12.5 update released in China
Xiaomi announces global MIUI 12.5 release time frame - GSMArena.com news