The upcoming iPhone 14 Pro and iPhone 14 Pro Max models may get upgraded to a 48 MP main camera with larger pixel sizes, according to a TrendForce report. It is possible that Apple may use downscaling algorithms to give a final 12 MP output from the raw 48 MP sensor data. While the 48 MP main camera will be limited to the iPhone 14 Pro models, the entire iPhone 14 lineup is slated to get 8K video recording.
https://www.notebookcheck.net/iPhone-14-Pro-models-to-get-a-48-MP-main-camera-upgrade-with-larger-pixel-sizes-8K-video-recording-to-be-available-across-all-iPhone-14-models.592094.0.html