I thought you would be writing about more freight cars based on post 1970 prototypes in the RailKing line to match the modern RailKing compressed and RailKing scale sized locomotives like the ES44AC, SD60, SD45, C40-8W. There are some, but since there were so many box car, covered hopper, open-top hopper, gondola, flat car variations made since then, it would seem like one more car model would be made each time a catalog was released.
Andrew