Since I don't play team modes this may be totally in left field; but do you really think IW will alter map availability at this point ? I'm sure that the new DLC will contain new TDM maps. So whatever IW decides it will most likely be at that juncture.
Neither of these maps have been available In FFA - - - and with the addition of the new DLC maps I was kind of hoping that IW would start to switch the maps in each game mode for a change of pace.