The Chinese version of the Redmi K30 Pro Zoom has started receiving an OTA update containing MIUI 12 based on Android 11.
The firmware isn't compatible with global units, but normally the company releases a different update for those a while after the version for its home market.
The software version is V126.96.36.199.RJKCNXM and it requires a 3.3 GB download. Of course, Google's latest security patch for November is also baked in.
Source (in Chinese)