A Full-Screen Display
It’s inevitable that Apple will have to move the iPhone SE to a full-screen, edge-to-edge display. The current design is already getting long-in-the-tooth, and by 2023, it’s going to look positively archaic.
Further, the first two generations of iPhone SE have already established a pattern of using a three-year-old design. The first iPhone SE, released in 2016, adopted the 2013 iPhone 5s, and the current 2020 iPhone SE is a dead ringer for the 2017 iPhone 8.
While Apple is certainly under no obligation to continue that trend, if it does, that means a 2023 iPhone SE would mirror the 2020 iPhone 12. While that would be a bit unusual, considering that this is still a current design, it’s not entirely out of the question, and in fact it would be interesting to see Apple unify the design language across its entire iPhone lineup. After all, by 2023 the iPhone 11 would have been dropped out of the mix as well.
On the other hand, Apple could go with an iPhone XR/11 style instead, which is what most rumours are pointing to now. Either way, however, it’s a very safe bet that the bezels and front home button will be going away in favour of an edge-to-edge screen.