From OMAAT, discussions afoot to configure certain future 787-9 deliveries in a "premium heavy" configuration: J - 51, W - 32, MCE Y - 18, Y - 143.
Current 787-9s are J - 30, W - 21, MCE Y - 36 Y - 198.
https://onemileatatime.com/news/amer...g-787-premium/
Woe betide the AA elite that can't or does not upgrade. Two rows of MCE is not much....