Samsung unveiled its 64 MP sensor a while ago but it hasn't been adopted by any OEM yet. That will change this week, though, as word on the grapevine claims Xiaomi will release a new smartphone with that sensor on August 7. Even more interesting is the theory that it could be the Redmi Note 8.
https://www.notebookcheck.net/Xiaomi-to-launch-a-64-MP-camera-phone-on-August-7-possibly-the-Redmi-Note-8.428685.0.html