Haven't seen any of the new regular series Matchbox but I did find three new white over orange '63 Cadillac Ambulances in the new Matchbox Lesney Edition, that comes with the box, at a local Fred Meyers. It is labeled as "Unit 2 MBX City Ambulance Service". I had thought they were starting to carry the Super Fast line and have been looking for the Pierce Engine that supposedly is out in the Super Fast line. Didn't look close to see this is the Lesney Edition till I found this today. They are on a larger card with the car sitting on tip of the box. Not sure what others fire related are being released in this series.
The Velocity is out now, the white Pierce is out now and the HAzard Squad is due in June. The brush rig is OCt according to info on fireengines.net.
Also the new Rapid response ambulance from hot wheels is out and unique. Check out ebay for a pic