Flew AA 2889 DFW-SEA yesterday as well in F, this is an ex-TWA 757 with the footrests.
Flights 2800-3199 are ex-TWA aircraft and are not configured with power ports. This goes for MD-80 and 757 family of A/C; haven't been on an ex-TWA 767 to see if these are affected as well. I had heard rumours three months ago about treconfiguring the ex-TWA birds with power ports when the new seats were put in, but then again...that was 3 months ago.
FWIW, I don't believe there are any AE flights / equipment with power ports either, be they ERJ, CRJ, Saab or ATR aircraft.