It's definitely an iphone 6 plus issue. I walked into my local AT&T store at 4 pm today because I wasn't able to order via the website as a premier customer who wants to use Next. Ordered iphone 6 128 GB gray because it was showing delivery on launch day as per a cheat sheet att rep had showing latest delivery times they had on pre orders. Not sure if the info he had just related to store pre orders or all pre orders via Att after a certain cut off. And yes of course I snuck in a quick pic of his cheat sheet 