I have just put on hold two first-class tickets for BOS-SFO in October. There will be a stop-over in Dallas. The plane information is displaying as 32B-Airbus A321 (Sharklets) which when you look on SeatGuru seems to show it as single seats in the First Class area. However, when I got through to booking, the layout is 2x2 five rows.

I have done some research and some posts I found seem to indicate that AA have rolled out their A321T (which is the only model with the lay-flat seating on domestic flights) to certain Boston routes, but on another article someone had said that just because a flight is listed as 32B doesn't mean that it will be an A321T flying it (apologies, I cannot link to the URL as I am a new poster).

I really want to make sure that these are lay-flat/'suite' style seats, and not just First Class in name only (i.e. extra legroom), otherwise I will go with JetBlue. As such, can anyone advise whether American Airlines uses their A321T plane on this route or not?

Grateful for any confirmation people can give!