Interesting and disappointing to see cutting back the number of J seats in 788. I think I fly the 788 most based on my monthly roundtrip commune between IAD and PEK. I often counter a full J cabin within 2 to 5 days of departure and have to route through ORD or EWR to purchase a J seat.

Perhaps it is an inventory management issue that they clear the upgrades too early. When I purchase Y seats and upgrade in advance, I have never had any problem clearing upgrades.

I do wonder whether 788 will be replacing 752 on PS routes since both will have the same number of J seats..... too much of an airplane perhaps to do transcon, but 788 is horrible for international routes with the small J cabin.