Quick question. I'm booked in F on DL97 ATL-MCO operated with a 767-400. This flight is only listed from 11/16-11/30. It's an international flight number, so it shows up in the reservation system as Business (D). The seatmaps for both F and Y list the aircraft type as 767-200.

Does anyone know if this is some indication of 764's that have been converted to BizElite seats? Is it something like the 757/752 designations that were supposed to be used for some of the ex-Song planes?