I ordered my AT&T Black 128 GB iPhone 7 Plus from the Apple Store 10 minutes after they went on sale. Original estimated delivery window was Oct 4 - Oct 10 but then my order went to "Preparing for Shipment" on Saturday 9/17, my credit card was charged then this past Monday morning 9/19, the status changed to "Shipped"!
UPS delivery was immediately set for today Wednesday 9/21 but when I checked the tracking yesterday, UPS updated the delivery date got pushed out a day to tomorrow Thursday 9/22. As I checked the UPS tracking again this morning, UPS now states "Scheduled delivery information is not available at this time. Please check back later.". Tick me off!
So, clearly there's some sort of shipping delay. I see that my phone sat in ZhengZhou, China for 2 days but it's now in Incheon, Korea. Hopefully UPS will update with a new, solid delivery date soon. I'll update you all again once that happens.