The wait for Android 10 on the Redmi Note 8 Pro continues, as does a Widevine DRM L1 fix. While the former remains an unknown quantity, the latter is apparently now in sight. Owners of the Redmi Note 8 Pro must wait at least another month or so before the next OTA update, though.
https://www.notebookcheck.net/The-Redmi-Note-8-Pro-is-in-line-for-a-big-OTA-update.453749.0.html