Numerous details about the Sony Xperia 1 IV (Mark 4) flagship smartphone and a release date have turned up via a source on Chinese social media who has frequently posted leaks about Sony's phones. According to the rumors, the Xperia 1 IV could sport a Snapdragon 8 Gen 1 chip, up to 16 GB RAM, and feature typical Xperia 1 camera equipment.
https://www.notebookcheck.net/New-Xperia-1-IV-rumors-detail-camera-equipment-specs-and-release-date-for-Sony-s-2022-flagship.596356.0.html
I hope Sony does not change the form factor and phone design. It would be nice if they add some attempt at cooling the Xperia 1 IV better than their other phones in this model.