We were up for new phones and I was not sure which model to go, until I heard about the carriers doing the big trade-ins even on the 4s. I'm wondering if the carriers are going to do the same great trade-ins on the 2015 6S models. Or was that only to get people to preorder the new phones? I love the trade-in, but the wait for the iPhone 6 was painful (and still going on for some). I'd like to hold out for three years and do my upgrade in 2017 next time. (Wow that's way in the future.) But I hope to get back on the S cycle but I also want to have the easy trade-in too.