As was stated, it usually is not until the new iPhones have been announced that current users of the NEXT plan can check their plan status and the possibility of being able to swap their iPhone for the newest model. Twelve months (or, eleven, maybe) of payments are what is necessary for eligibility. My particular way of handling this is to totally pay off my current iPhone a month or so prior to the announcement of the new ones so that I then have flexibility in moving forward with purchasing a new iPhone at either an Apple store or AT&T, usually trading in my current one and then beginning a new AT&T NEXT program at that time. This year I am thinking of keeping my iPhone X rather than trading it in, haven’t decided for sure yet, but at any rate will be paying it off soon so that my options are open.