I checked-out AA.com again, and there is now no mention of the SEA-NRT cancellation! It also now says DFW-KIX service will be "reduced". But the SEA flights in question do not show up on AA.com schedules. They do however show up on ITN, but with 0 availability in all fare classes. When talking to an agent earlier today, she insisted that the flight is "sold out" and seemed to think AA had literally sold every seat overnight (which I find unlikely).

Does anyone know what is going on with this service?