Sony is launching the Xperia 1 III and Xperia 10 III in a few days, but a case manufacturer is already selling cases for both devices. The listings reveal the designs of both devices too, confirming the revised rear-facing cameras for this year's Xperia 1.
https://www.notebookcheck.net/Case-manufacturer-reveals-Sony-Xperia-1-III-and-Xperia-10-III-designs-ahead-of-their-April-14-launch.531114.0.html