You could say that about literally any improvement to iOS or iPhone hardware. They're all "schemes to sell new iPhones". Just like every improvement Ford or Honda makes to their cars are "schemes to sell new cars".
In fact, you've accidentally hit on a basic premise of capitalism itself: every improvement in [product or service] is a scheme to sell new products and services.
Meanwhile, the phone you bought does all the things it did when you bought it. And more, in fact. Apple adding new features that work on new hardware is not remotely new. It's how things have worked in consumer computing devices for like half a century at this point. Not everything is some diabolical conspiracy.