Bob is definitely keen on getting his tracks back up to national standards. The work on Calder is 30 - 50% done now with new race control facilities, resurfacing, new timing boards (old one heading over this way).
Work on AIR should be starting soon after work is finished on Calder. So it will still be a while off as there is strong talk of extending the track over there.
will keep on looking further to try and find the exact plans around Air - resurfacing the whole track & drag strip is in the mix at the moment