It has not *definitely* been decided to retire/cannibalise AA but, bluntly, unless the worlds economy makes a spectacular unexpected recovery or BA decides to run a massive charter programme, she is unlikely to be needed for years to come. The airframe is entirely intact, minus elevons, pcus and some windows, and is safely stored under cover. She even has three Olympus' on board.
AB is in another hangar, again structurally intact, sans engines, elevons and rudders but with pfcus and with the engineering work on the new lavatories complete. Both still await spar72 mod and liners. AB would be the next airframe out when required.
AG is just about to emerge with the phase 2 flt deck door, C,D,E &F will folllow soon.
With a very large FD door modification programme ongoing through the airline it is hard commit enough engineers to the operation to move things any faster, so it is probable that even without the dismal economic climate AB would be waiting for a while yet.
"....rumours of the Conc fleet's demise are greatly exaggerated........."