Apple sometimes releases new operating systems without changing the system requirements—but this year isn't one of those years. The iOS 17 update will drop support for several older phones that can currently run iOS 16: 2017's iPhone 8 and iPhone 8 Plus, and the original iPhone X.
Apple's system requirements list the "iPhone XS and newer," which should encompass the iPhone XR and all subsequent iPhone X-style notched iPhones, plus the 2nd- and 3rd-generation iPhone SE.
The iPadOS 17 update also drops support for most of the pre-2018 devices that iPadOS 16 still supported, including the 5th-gen $329 iPad and the very first 12.9- and 9.7-inch iPad Pros from 2015 and 2016. All other iPad Pros, the third-generation iPad Air and later, and the 5th-generation iPad mini and later will all run iPadOS 17, though the older a device is, the more likely it is to miss out on a handful of newer features (like Stage Manager).
Ars Technica - All contentContinue reading/original-link]