Starting at 9 p.m. Pacific Time Friday night, Apple's website has pages where you can see the availability of iPhones at your store.
The state-by-state pulldown menu gets you to pages where each state's full inventory of Apple retail stores are listed.
As you can see above, a green-color indicates units are available as of today's 9 a.m. local time openings, and a red- well, you only get one guess.
I've checked the iPhone availability for every Apple retail store in many states, and all I am seeing is green.
You see New York Apple retail store iPhone availabilities at the top of this post. Let's wind up this resource again and hit some listings in our most populous state:
In other words, that means Apple retail stores have iPhone units in stock as of today's opening times. Will be interesting to see how long that inventory situation can be sustained.