Originally Posted by dkc192

The swap from 45J to 37J does not necessarily guarantee Super Diamond seats...there have always been 772s with 37 Concept D seats (originally it was 6 out of the 34 frames with 37J, leaving 28 out of 34 with Super Diamond). I recently saw a report (can't remember the exact source) that all active 772s are now configured with 37J and PE, with the final two 45J aircraft in retrofit. This means that 17 of the 45 active 772s have the Concept D seats; soon to be 19 out of 47 once the final two aircraft have completed their retrofit.

In other words:
13 out of 47 came with 45 Concept D seats; these have been retrofitted to reduce the number of J seats by 8 and add PE.
6 out of 47 came with 37 Concept D seats.
28 out of 47 came with 37 Super Diamond seats.

Seat type hasn't changed with any of the retrofits. There is now one standard configuration for all 772s in terms of seating numbers but not the type of J seat, and it won't be known which J seat you will get until ~48h before departure. At that point, if your flight has been assigned an aircraft with Concept D seats, your seatmap will be updated to show little notches in the backward facing seats.

Originally Posted by BrianWBrazil

Hi there, My flight this coming Friday night has just been changed from a 777 200 with 12 rows of business to a version with 10 rows. It seems the new version is all forward facing seating. I happy with the actual seat location as it's in the same part of the cabin (row 3), but should I be happy about the actual aircraft? Are these variants of the 777 200 any better or worse than what I have been expecting? I have never flown on AA metal so thanks for any insight.