Roh Tae-moon, the president of Mobile at Samsung, has claimed that the OEM has developed devices with "even more" hinges than the new Galaxy Z Flip. However, these multi-folding phones are apparently not ready for prime-time yet. This is due to the idea that consumers will want much more UX polish in such products.
https://www.notebookcheck.net/The-Galaxy-Z-Flip-is-only-the-tip-of-the-fold-berg-at-Samsung-but-it-s-not-consumer-ready-yet.453864.0.html