Per Reddit: packages in Korea are being upgraded to next day delivery.
"Just spoke to a UPS shipping logistics supervisor who explained to me that all iPhone packages (with a Korean arrival date of 9/20 or 9/21) currently held up in Korea will be out of Korea tonight and in the US by tomorrow morning.
I then spoke to a management rep at the Apple Online Store who stated that all packages currently in Asia have been upgraded to next-day delivery. He assured me that I would have my phone either tomorrow or Saturday at the latest."
Seems like more BS.