Just had a chance to thumb through the 2012 Williams catalog and there are some surprising changes that I was not aware of. New Accessories like a crossing gate, lighted bumpers, street lamps an operating log dump car, cop and hobo car and a new product called EZ streets (a line of cars and trucks that run on flat tracks that look like trolley tracks) were added.
It would appear that Williams is expanding their line to capitalize on the conventional control market. We can only guess that more accessories are coming.