An executive with the mobile division of Lenovo in China has hinted that more of its upcoming devices could launch with 512GB of internal storage - its next-gen foldables included. This, then, could include the rumored successor for the second-gen Razr smartphone.
https://www.notebookcheck.net/The-Moto-Razr-3-could-launch-with-a-512GB-storage-option.610129.0.html