ExpertFlyer now seems to be displaying C, U, and T (upgrade and saver award availability) in the regular (paid) availability results (it just started in recent weeks), so you no longer have to do a separate search for awards / upgrades. Example:
AA 1292 0
LAX
12/18/19 11:09 PM
BNA
12/19/19 5:05 AM
738
Daily
79% / 54m
C3 J5 R5 D5 I4 U0 Y7 B7 H7 K7 M7 L7 G7 V7 S5 N2 Q0 O0 E0 T0
Is this because of something that ExpertFlyer did, or is this because of something that AA did at their end?