Three years after the release of the Mi Mix 3, Xiaomi is gearing up for the release of a direct successor, the Mi Mix 4. The Mi Mix 4 has now been tipped for an August launch, and could do that while playing host to a bunch of interesting technology, with the most notable of the lot being an under-display selfie camera.
https://www.notebookcheck.net/Mi-Mix-4-set-for-August-debut-with-a-Snapdragon-888-and-under-display-camera-onboard.548390.0.html