If you are looking to pick up a Cyan or Yellow Nokia Lumia 920 from AT&T you are going to have to be prepared to wait. They are both showing out of stock and can’t even guarantee a shipment for at least a week. Below is the disclaimer you get when you go to order at AT&T’s official site.
Your Nokia Lumia 920 will be shipped in 7-14 business days. The included Nokia Wireless Charging Plate will ship at a later date.
While official sales numbers haven’t been put out from all I can gather the demand for the Lumia 920 is HUGE. In fact it has been reported that this is already Nokia’s best selling phone in a decade.