Actually, Blink, AA has received all the -300ERs it has on order. Its interesting that this question got brought up again, because over on the Orders discussion forum, it was reported that there is a very strong rumour going around the industry that Boeing is prepared to announce the North American launch of the -400ERX. Although both DL and CO could certainly be converting some of their orders, the line is that AA is going to be this launch customer. If so, I would expect an announcement next month or so, when the pilots contract is signed.
Honor the warriors, not the war.