American Airlines ordered 8 more planes today, according to Boeing. The order includes 2 757-200s, 4 737-800s, and 2 777-200ERs. Delivery is 2002-2003. It seems like AA is ordering their planes on a piece by piece basis, rather than all at once. That is probably a better idea than ordering huge quantities all at once, in my opinion.
The order is also in line with AA's fleet standardization plan. I do wonder when they will consider the F100 replacements (my bet is Boeing will give them a sweet deal on the 717, but who knows...)