Some firm details around Apple's iPhone 11 due this fall have emerged courtesy of 9to5Mac. The big tip is it will retain its Lightning port for the time being, while also getting some key upgrades to its Taptic Engine, a new front-facing camera and Apple's next-gen A13 processor.
https://www.notebookcheck.net/Latest-iPhone-11-rumors-point-to-new-Taptic-Engine-A13-chip-new-front-camera-and-no-USB-C.428085.0.html
The biggest bottleneck of the iPhones being releases is the slow lightning port for data transfer speeds between the iPhone and the MacBook Pro's. The MacBook Pro's come with Thunderbold 3 at 40Gbps speeds and the iPhone comes with snail crawling data transfer speeds. Try syncing a 80-100gb iPhone with iTunes and see how long that takes as it needs to create a new backup each time while syncing.