No need for rumors. It will probably be based on the newly released Sony a6700 (2023), minus the EVF. Check out our Sony ZV-E10 Improvement Suggestions, and you should get a really good idea what Sony engineers would be aiming at improving.
There are some rumors going around that Sony might be ready to upgrade its APS-C Vlogging mirrorless camera, the Sony ZV-E10 (2021). What new features will be in the Sony ZV-E10 II?