There is a bid for engine shops open right now. I think it is PW4000. There was also an open bid for the ATL hangar just recently. I don't know how many positions were open. I do know that I got one and so did another guy from BOS. We have both been trying to get back to ATL for a while now. Neither of us had recall rights to ATL anymore so it was an open bid.
As for new hires going to the engine shops. I doubt that will happen. Those positions will go to current transfer AMTs and they will be backfilled with another bid for their openings. Those could be new hires or Tech Helpers promoting up to AMT.