Go through this thread: https://in.c.mi.com/thread-2025452-1-0.html

Information about the rollouts happened will be updated here, if your device is not mentioned here it's still in testing and will roll out after the tests are passed.

1. Schedule which is given is not for full rollout bro
2. Schedule is subjected to internal testing status or public feedback
3. Partial rollout has been made and feedback is being collected from the updated users and the testing team.

If everything goes fine and no major issues are found it will get the update soon.