I just travelled from JFK-NRT-SFO on JL first class using an AA award ticket from Oct 10th to the 15th. I had been trying dates in October/Nov since the last 3 months but nothing was available especially the return segment. But then closer to October, dates started randomly and sporadically appearing and fortunately I was able to get both segments confirmed. However, it is practically impossible to plan in advance if you have other dependant reservations.

But the new JAL first class is outstanding though and the best I have seen on OW yet. Even the 744 service is good also with the old seating arrangement that has absolutely no storage space except for the pouch in front.