Sunday afternoon they had none, and the employee there didn't know when they'd have more. They still don't have any iPhone 4 accessories in stock either. Store was packed with customers though.
I was lucky to get my iPhone 4 (and one for the wife) as a walk-in Thursday night. Got on line at 7:30 pm, was one of the last dozen or so people on the line, and got in the store at 11 pm.
-HM