I am completely confused by all the terms attached to this "free iPhone 6". I am a year away from an upgrade - so why in the world would I pay $649 for a phone that I can buy at Apple for $199 (and then sell my 4S on Gazelle for cash to offset the Apple price)? Am I missing something here? Is there any way to extend my existing contract and take advantage of the promotion? If not, it sure is an interesting way to treat existing customers...