Mine has been moved to tomorrow, 9/23 as well. While disappointing, the phones will still arrive earlier than Apple's estimate (in my case, 9/25). UPS's tracking system is the big hurt here. It would have been nice if UPS would have updated their tracking system as the delays were actually happening.
Updating everyone's delivery date as 'early' (for 9/22) only to push it back to 9/23 while not updating the tracking system for days is a bit sloppy for a company the size of UPS (with all their technology and resources).
Today would have been perfect to receive it as I have the day off, but oh well. My UPS guy just delivered a Zappos package to me and I told him that I am expecting my iPhone tomorrow, but I am working and will try to be home in time to sign for it. He said, 'don't worry Steve, if it's on my truck, you'll get it tomorrow, I'll come back later at night if I have to before my route is done'.
He's a good guy, and this is why he gets a fat tip every holiday season.