Interesting. We ordered at the ATT store at the end of Sep. Black/Grey 16, White/Silver 16, and a Black/Grey 64 6+. We were told the 16s would ship in “a couple days” and the 6+, “a couple weeks” even though the paperwork had separate dates ranging from 10/6 to 11/15.
The Black/Grey 16 shipped the next day. The White/Silver date has changed a couple of times and is now back to the original date. No news on the 6+ at all.
It's just like going through AT&T. No different, but you get your iPhone faster since you are going right to the source.
I did the same thing when the iPhone 5 came out 2 years ago with the same results.