I drove out to the Apple Store two days in a row (once through really bad construction and once through bad accident traffic) to see if I could luck out and snag one. I was tired of it, so I finally went the Best Buy route. I did get notice today that it shipped, so I'm hopeful I'll have the keyboard by Monday. I didn't try the other two Apple Stores in my area because I was just fed up.
As an FYI, I found it helpful to use the chat function on the website and they can check inventory we can't see. Same with calling the store and getting routed to the operators.