Samsung is said to have a true Galaxy Fold 2 in the works - now, it also seems there is a 2nd-gen Galaxy Z Flip as well. This clamshell-style foldable, despite its novelty, may be underwhelming in terms of its dual rear cameras. New patents allegedly filed by its maker shows how it might look with 1 lens more.
https://www.notebookcheck.net/Some-of-Samsung-s-latest-patents-show-a-possible-next-gen-triple-camera-Galaxy-Z-Flip.463571.0.html