It seems that Apple is making iPhones to order this time around with a minimum of pre made devices, and like others my order was placed a few minutes after the preorder opened, and then Apple begins producing the order once the order is placed, as opposed to having it already produced. Since my order did not ship until the 14th, Apple can then create the device and ship within the delivery time frame, in my case the 16th.
This is just my theory, but it makes sense from a manufacturing standpoint.
This is just my theory, but it makes sense from a manufacturing standpoint.