Xiaomi has pushed a new update to the Poco X2, but quite possibly not the one for which people had been hoping. The MIUI 12 upgrade has been extended for the Mi 9, though. However, full-screen gestures may not be arriving on the Redmi K20 Pro until a new update arrives.
https://www.notebookcheck.net/Stable-MIUI-12-for-the-Poco-X2-stalls-as-Xiaomi-extends-MIUI-12-rollout-for-the-Mi-9-full-screen-gestures-arriving-for-Redmi-K20-Pro-in-a-subsequent-update.480876.0.html