Xiaomi has announced for how long the Xiaomi 12 and Xiaomi 12 Pro will receive software and security patch updates. Not only will the Xiaomi 12X be cut off from updates sooner than its siblings, but Xiaomi also cannot match Samsung for the longevity of software coverage it provides to its recent flagship smartphones.
https://www.notebookcheck.net/Xiaomi-12-and-Xiaomi-12-Pro-confirmed-to-receive-shorter-software-support-than-the-Samsung-Galaxy-S22-series.608354.0.html