I don't have a whole lot to say about this, but saw this review of the new, full-sized iPad, and wonder what the author was looking for. They can't revolutionize the device every year. Heck, look at the difference between the Retina Mini and the Mini 3.
Anyway, I received my Air 2 yesterday. One oddity: the box only says iPad Air, not "iPad Air 2". Only indication that I had the right model was that the color was listed as "Space Gray".
I don't have a whole lot to say about the upgrade, except that I'm thrilled with it. It does everything the old one does, a LOT better. I don't yet have anything that really takes advantage of the speed, yet, but hope will get some things soon.
Regardless, I'm very happy with the purchase.