The iPhone 11 and iPhone 11 Pro officially went up for pre-order yesterday ahead of their September 20th launch day. Over the last 24 hours, supply of certain iPhone models has started to dwindle, but plenty of options still remain for day one delivery.

from https://9to5mac.com/2019/09/14/iphone-11-availability-launch-day/
https://9to5mac.com/wp-content/uploads/sites/6/2019/09/iphone-11-1.jpg?quality=82&strip=all&w=1600