I'm in the same boat but I think mine got stolen by the UPS driver.
I've ordered 3, for my family.
On Friday 9/21 morning, all my UPS status shows, "OUT OF DELIVERY at 8:41 AM"
At 11 AM, UPS rings bell, my neighbor signs for them packages as I was coming out. Neighbor hands me 2 packages, I saw the UPS driver going back to his truck. I said to him, "There's only 2?", he replied, "I only have 2 of the 3 on my truck."
Two of the tracking # shows delivered and third one still showed, "OUT OF DELIVERY" by Friday night.
Day passes and over the weekend, the status of the third phone shows, "09/21/2018 8:41 A.M. Destination Scan".
So, somehow, the third one is MIA...
This morning at 10 AM, I get an unexpected visitor, it was from UPS security specialist. He was questioning if I have gotten ALL my iPhone's. I told him I got 2 out of the 3. Then he continues to ask if the driver was a helper or the driver himself. He told me to call him by the end of today if nothing shows up. I think UPS knows about missing iPhone packages cause he had handed me the paper with the delayed/MIA package.
In hindsight, it was weird that the UPS driver knew I had 3 and said he only has 2 of them on his truck. Either the 3rd one was on the truck and he gave one to someone along the route or kept it for himself.
I'll keep y'all posted if it ends up showing up today, I highly doubt it as I saw a UPS truck passed by earlier.
https://imgur.com/U3JUPaK