Thanks, I just read that in the AA forum. They will be operating out of all four concourses. Unless an airside connection has been built when I wasn't looking, I imagine this means they'll continue to operate their airside shuttle bus. For the OP, however, if traveling on or after Dec. 9, this also means no easy way to connect between AA and UA at Terminal B and DL at Terminals A, C and D. No airside connection and not walkable.