A new listing on the TENAA regulatory website indicates that the OEM Vivo intends to reboot its Nex 3 flagship with a new version. It has an SoC with a different max clock to that of the phone's original Snapdragon 855+ processor. This upcoming device also has dual-mode 5G and a new red color.
https://www.notebookcheck.net/Vivo-Nex-3-new-leaks-point-to-a-new-5G-version.450879.0.html