The New Alpine Green iPhone 13 Pro
I think it's a good idea for Apple to introduce new colored products between major releases. The alpine green color looks pretty good and if you use your phone naked that might really matter.
The main marketing point for Apple is to just highlight that the iPhone 13 Pro exists to drive further sales. This is an approach that absolutely works, and even my clients at Mattifesto use it. It's always good remind people that like you that you actually exist.
I have the iPhone 13 Pro Max and it's great. I think we are still at the point where every new iPhone has something to offer for nerds and photographers. For normal people a 3 or 4 year upgrade cycle is more appropriate.