I had an upgrade last year, so i used it to buy the 4S when it came out. A check of my status this past June revealed that my next upgrade was May 2013. Cool. Iphone 5 comes out, and i got it at full price, since i didnt have an upgrade to use. I knew that and was fine with it. Today I check my upgrade date out of curiosity, and its jumped to May 2014. What? I paid full price for my phone, I didnt use any upgrade, so why has my upgrade date changed? Or am I missing something obvious here?