The next generation of iPhones - thought to be called the 12 series - have been leaked extensively already. A new leak from Ross Young of the DisplaySupplyChain tips site now claims to fill in some of the remaining blanks. They include the resolutions and sources of their respective displays.
https://www.notebookcheck.net/A-new-leak-fills-in-even-more-detail-on-2020-s-iPhones.465900.0.html