I may be wrong about this, but I firmly believe that certain features are always left out of the number cycle iPhones for either: 1) repackaging the same phone with new features so it can be sold twice, therefore revitalizing the sales or, 2) certain features were simply not ready to be put in the phone, but were originally planned to go in the number cycle phones. I don't ever go for the number cycle of the phones because I would always feel that I got the short end of the stick once the "S" cycle is announced not even year after making my purchase. Even the tiniest upgrade is enough to make me jealous lol. and lastly, there's no way features like 3D Touch & Touch ID could have only been fully developed after the iPhone 6 & 5 came out. If Apple truly wanted to, they would have been in those phones. So for me, the iPhone 6s is the REAL iPhone 6. But that's just me. What do you guys think?