The latest approved patent filed by Motorola in May this year seems to confirm the previous rumors launched around MWC time in February regarding the return of the RAZR brand. However, this time Motorola may equip the clamshell design with a flexible display and special hinges with flex sensors, so the new RAZR might actually be Motorola's first foldable phone.
https://www.notebookcheck.net/Patent-reveals-possible-return-of-Motorola-s-RAZR-as-a-foldable-phone.324188.0.html