Have we seen any tracking originating from the states yet? Kind of unusual they all seem to be coming from China, usually a few hubs have a ton of stock as well pre placed.
Apple released the iOS 10 GM on September 8... so your idea wouldn't have worked. They have to install the software, test, package, ship. And given they first started shipping on September 10 and 11, the logistics weren't there for time to drop ship lots to the US warehouses. In the past there has been 2-3 week windows between announcement and delivery, so they've been able to do that.