Just wanted to be sure I wasn't overlooking something, is there a list of things an Air 2 can do that an Air 1, Mini 2 or iPad 4 cannot? I didn't include the Mini 1, 3, 2, or 1 in here, as those seem to have dropped off the feature road map already. I know the hardware improvements between these generations, all very impressive, but that's not what I mean. Not really considering TouchID either as its just a different way of unlocking. I'm talking about unique functional features that isn't available on another device. An example of what I mean is on the iPhone6, you have NFC so you can do ApplePay. No other iPhone has that capability. That is a unique functional feature. The only thing I can think of are the camera improvements - Time Lapse and Slo-Mo. Anything else? I think all of them got all of the continuity, handoff, and AirDrop features.