A leaker has shared hands-on images of a third-party case for the Galaxy Z Fold4, months ahead of the device's anticipated release. The third-party case showcases design changes from the Galaxy Z Fold3 as Samsung moves to a squarer form factor.
https://www.notebookcheck.net/Samsung-Galaxy-Z-Fold4-Leaked-third-party-case-highlights-form-factor-change-for-Samsung-s-next-generation-foldable-smartphone.622824.0.html