The iPhone 14 Pro and 14 Pro Max will have improvements and it would notably be a question of the photo part and the RAM according to the statements of analyst Jeff Pu.
Better for photos and RAM with the iPhone 14 Pro
With its two iPhone 14 Pro, Apple would offer a main photo sensor (wide-angle) of 48 megapixels. In comparison, the iPhone 13 Pro has a 12-megapixel main sensor. This ties in with previous information from analyst Ming-Chi Kuo. The latter had also mentioned the possibility of filming in 8K (against 4K today). As for the ultra-wide-angle sensor and the telephoto lens, Apple would stay on 12-megapixel modules.
It is also a question of RAM. Apple would increase to 8 GB of RAM in 2022, against 6 GB of RAM on the iPhone 13 Pro. The analyst does not however specify what will be the use with the additional RAM.
Jeff Pu has had good information in the past regarding Apple. He notably announced that Apple would offer MacBook Pro and iPad Pro with Mini-LED screens in 2021. But he was sometimes wrong. So you have to take some of your information with a grain of salt.
For example, he announces that the four iPhone 14s will have a screen with a display of 120 Hz, where it is reserved for the iPhone 13 Pro. Monitor analyst Ross Youg has already said that Apple will continue to offer a 60Hz display on non-Pro models. Also, Jeff Pu says that the iPhone 14 will start with 64 GB of storage while the iPhone 13 starts with 128 GB. Suffice to say that a rollback on storage would be surprising.