The ZTE brand Nubia has confirmed that its Z series of flagship phones is back and is just about to launch in 2021. A combination of leaks and teasers appear to confirm an upgrade to an under-display selfie camera for this upcoming device. Meanwhile, rumors of a 64MP main shooter and a periscope lens might be backed up in its previews.
https://www.notebookcheck.net/Nubia-Z30-Pro-camera-spec-leaks-emerge-alongside-official-sample-photos.539735.0.html