Shipments go to Apple stores daily except Sundays. But stores have been known to hold a little stock here and there throughout the week and release it Sunday or get late deliveries on Saturday for Sunday. Either way, after 9PM just go onto the Apple store website and reserve for pickup the model you want. It will be waiting for you at your local Apple store the next morning for pickup.
Shipments to Verizon or AT&T or Sprint stores are far far far less frequent.
any idea if that includes all models for all carriers? all week i have been getting on at the dot of 9, and so far the only iPhones for verizon are either all white, or, 64 g in black. is there a shortage or the 16 g model for verizon?