The Redmi K20 may have now been superseded by the Redmi K30, but the former remains at the pinnacle of Xiaomi's software plans. Released in June on MIUI 10, the handset has started receiving Android 10 builds of MIUI 11 in China. A global upgrade to Google's latest OS likely in tow too.
https://www.notebookcheck.net/K20-Pro-Android-10-update.447125.0.html