Last year’s iPhone X was, in my opinion, the most significant year-to-year advance in iPhone technology…How do you follow up on an act like that? Apple actually has some experience in this area. It adds nice but incremental improvements to the prior year model, and then to indicate that it is a less significant upgrade, Apple adds an “s” to the name… An “s” year iPhone doesn’t mean that there are no big new features. For example, the iPhone 4S added Siri and the iPhone 5S added a way to authenticate without typing a password (Touch ID), and both of those features remain critical parts of the iPhone. But in an “s” year, hardware changes are typically less noticeable.