Hi Patrick
It does seem that this is the case. I'm not sure why you might want to go thru Walthers for parts when you can bye parts direct from Athearn though. I just received some Genesis F unit cab interiors and a whole buch of axles gears (to replace split Proto2000 ones) from Athearn. Only took two weeks to New Zealand at a very reasonable cost and shipping charge. Walthers however burnt me to a sinder with there shipping and handling charges on some cheaper items.
Anyway, if indeed Walthers is moving away from Athearn products it does make one wonder if Horizon's dealer policies are going to do them any favors in the long run.
Nigel