Redmi Note 8 2021 MIUI 13 Update: New Update for Global Region - xiaomiui
Xiaomi will no longer release beta updates MIUI 13 for 8 smartphones (list) | gagadget.com
MIUI 13 will be available for devices released in the last 2 years: Tipster - Gizmochina
MIUI 13 could be officially revealed at upcoming Xiaomi Mi Developer Conference and predicted eligibility list includes Redmi Note 8 Pro, Mi 9 Pro, and POCO X2 - NotebookCheck.net News