Rumors show that Apple may be preparing a significant design change for the "iPhone 14" in 2022. However, in order to implement the suggested changes, Apple will need to overcome several design and technology challenges year-over-year.
Apple tends to reuse product design languages for several release cycles to reduce production costs and increase margins. The flat-sided redesign in the iPhone 12 carried over into the iPhone 13, with only a couple of modifications to the external case. A drastic redesign for the 2022 iPhone may be early for Apple's usual update cycle, but it is possible.
While Apple sometimes referred to iPhone updates using the "s" naming convention, it hasn't done so since the iPhone XS. Therefore we'll be referring to the 2022 iPhone as the "iPhone 14" throughout this text.