Amazfit has announced that the GTR 3 will launch later today (October 11, 2021). The round-faced smartwatch is projected to do so alongside an inaugural Pro variant during this event. Now, the same device has appeared on Amazon's US site. The listing's link reveals its pricing and display size, although the page behind it does not open quite yet.
https://www.notebookcheck.net/The-Amazfit-GTR-3-Pro-is-inadvertently-partially-unveiled-by-Amazon-just-before-launch.571386.0.html