Serenity Caldwell and Jason Snell, writing for iMore, have already put together a transcript of Apple's Q4 2015 earnings call. This is where you want to go to get all the details shared by Tim Cook and CFO Luca Maestri earlier today, such as this tidbit on the iPhone Upgrade Program:
Rod: On the Upgrade Program, can you envision a time ever, maybe in the U.S. or elsewhere, where you would not have to come into an Apple Store to take advantage of the upgrade? You might be able to do that somewhere else?
Tim: That's a really good question. We actually solved that problem back in 2007, but then quickly had to change it in order to scale in a major way. And so that is something that we is always in our mind, that one day from a customer experience point of view, we would like to make things as easy as possible for the customer. And to some degree, you can already do that with buying online. But there are many different plans and so forth that people buy that they have to come in for. Yes, over time we'd love to have that automated, working with our partners with service providers.