When we get EDGE, we'll hopefully see new maps. IMHO, if EDGE is as close as they say, it'd be a waste of time and resources to do more maps now, before EDGE.
As for aircraft, we're seeing a very clear trend of 3rd party devs doing most of the modules because they can worry about that and nothing else. They will obviously make the modules they think will sell well, and since most people don't want a game that only covers the late Cold War - Today, that seems like a smart move.