The 12 Pro is projected as one of the higher-end new phones Xiaomi should release soon. A recent leak purported to reveal how its cases might look and, thus, how its rear cameras would be arranged. However, a new tip along the same lines calls the alleged design into question on a specific point.
https://www.notebookcheck.net/Xiaomi-12-Pro-a-new-case-leak-contradicts-the-last-with-hints-at-additional-camera-hardware.584529.0.html