Rumour has it that even the entry-level in the iPhone 14 series will have a 120 Hz ProMotion display, a notable upgrade on the iPhone 13 and iPhone 13 mini. 6 GB of RAM could be arriving too, albeit without a bump to 8 GB for the iPhone 14 Pro and iPhone 14 Pro Max. Apple's next 'Pro' iPhones could receive improved storage configurations, though.
https://www.notebookcheck.net/Apple-iPhone-14-Pro-and-iPhone-14-Pro-Max-tipped-to-receive-a-storage-boost-as-even-the-cheapest-iPhone-14-model-to-acquire-120-Hz-ProMotion-display-and-6-GB-of-RAM-upgrades.592841.0.html