Xiaomi is now rolling out MIUI 12 to its Redmi Note 8T Global variant. It comes with a firmware version 126.96.36.199.QCXMIXM, yet based on, surprise surprise! Android 10! However, Xiaomi has kept security in mind, so you will get the October Security patch as well.
In the case of the European users, the update will get slightly delayed. The users outside China and Europe are already getting the update. Other than MIUI changes, you will see smaller optimizations for Control Center’s landscape UI, and some changes to the display noise as well.
For more about MIUI 12, head to MIUI