Who knows, I did notice many, many months ago in the alpha that the giant 8th AAF field with a river around it and a village with map room attached to it had been replaced by an AH3 conventional large field. I lamented in the forum how really neat that 8th AAF field was, and if it could be brought back. Go check out A1 on NDisles in the beta. Try taking out an LVT4, get in the river and sneak around to the map room side of the village by water thinking all the time: "I could ambush M3's this way"....
It was probably a coincidence, and Hitech had been really busy coding for a long time, so Waffle probably hadn't been asked to put it back in rotation yet.
I'm still waiting to see how the new Iowa Class battleship will be presented when AH3 goes live. It's main guns take about 30sec to reload. But it doesn't take many salvos to destroy anything.