Xiaomi has reportedly filed a new patent for smartphone displays with under-display selfie cameras. This one depicts them as part of a triple-camera phone, which suggests this tech is closer to real-world use at this point. In addition, the new sensors in question appear better integrated into the rest of the device compared to the OEM's last known IP on this subject.
https://www.notebookcheck.net/Xiaomi-may-have-patented-a-breakthrough-in-its-under-display-camera-phone-tech.464123.0.html