I have a iPhone 6 Plus and I would like to upgrade to the 7 plus. I know that the new phones will be announced soon and I was wondering what the price drop might be for the iPhone 7 plus when the new phones are released. Does anyone have an estimate? I saw the T-Mobile offer for $300 off with trade in of an older iPhone but I'm not sure if this is a good deal or if better ones will come out when the new phones are released. Thanks all.