A new MIUI 12 software update has started rolling out for participants in the Mi Pilot program who are testing the overlay on Xiaomi Redmi Note 8 Pro devices in India. This update indicates that a wider rollout for Redmi Note 8 Pro users may take longer than initially scheduled.
https://www.notebookcheck.net/New-MIUI-12-update-for-Xiaomi-Redmi-Note-8-Pro-now-available-for-Mi-Pilot-testers-in-India.483171.0.html