5 Streamlined Naming Scheme
As far as what the devices will be called, a recent Apple leak suggests that the two OLED models will be dubbed the “iPhone XS” — with no differentiation between sizing. That’s similar to how Apple names its iPad Pro lineup.
A more recent rumor hints that the larger 6.5-inch OLED device could be called the “iPhone XS Max,” but take that with a grain of salt. There’s no word on what the 6.1-inch mid-range device will be dubbed, but media has taken to calling it the “iPhone 9,” or simply “iPhone.”