I have a pending preorder in for 6+ 64GB Space Gray due to be delivered Oct. 1st-7th. I took off anticipating my iPhone to be delivered on the 19th but due to constraints in the supply chain this isn't happening. I am seriously tempted to cancel my preorder and camp out with hopes of locating a 6+ on launch day. 2 questions: what do you think the supply will be at the Apple stores, carriers, or Best Buy for the 6+? Any at all? What is the usual turnaround time for the carriers to show your upgrade is eligible?