I am in a family plan of 5 lines. 4 of them were upgraded to iPhone 5s as soon as it became available, with a new 2-year contract. However, when I checked upgrade eligibility on both apple.com and att.com, they both say that ALL 5 lines are eligible to upgrade to new iPhone at the price of new 2-year agreement (e.g. iPhone 6 16GB for $199). Dialing *639# from these lines also confirmed the same thing. Now I am more worried than feeling lucky as I'm not sure if something bad will happen (such as I am forced to pay extra fees to AT&T if they discovered this issue) if I go ahead and purchase iPhone 6 at this price when the previous 2-year contract has only been fulfilled for less than one year. If it were only the business of Apple then I would get the deal confidently but AT&T isn't a company I can trust. Does anyone encountered similar situation? Any suggestion would be appreciated!