I think UA is unlikely to outfit the 773 with GF if they install their rumored new 1-2-1 all-aisle access J product on it.
What's the likelihood of that? How soon before delivery would they have to develop and finalize it?
As a side question, if UA does install this new J and it is long enough for tall people and has a wide enough footwell for people with big feed and enough storage and privacy, what kind of GF product would they need in order to really differentiate it from BF at that point? I think they would need suite-level GF as a differentiator as well as a non-food soft product that they will not be able to sustain across their multitude of hubs or their staff. And if they had it I'm not even sure they could sell it.
Anyway, I don't mean to depress anyone, but I still hold out hope for:
1. New all-aisle BF hard product on the 773's.
2. 3-3-3 in E+ with additional perks and a higher buyup price tag