I just fired up my Airport Utility for my Airport Extreme and I found a firmware update. It brings the version up to 7.3.2. I don't have the current airport, I have the one before the newest one, so I am not sure if this update is for the older models or inclusive of the new one. I wonder why Apple does not have this show up under Software Update. I would have never have known about this update had I not just been randomly opening my Airport Utility to check something.