Given the delays in getting products out, a new catalog would almost be pointless. Maybe that'll change once the F3's finally are released, but right now, it's taken longer for MTH to rerelease the F3's than SHS took to develop them from scratch.
Let's see what's left to be made from the old SHS line (assuming the TOFC's and F3's meet the latest release dates): SW/NW switchers, F7's, 2-8-0's, EV Caboose, Outside-braced Boxcar, Straight Flat, Bulkhead Flat, 3-bay PS2 Covered Hopper, Ribbed Hopper, Offset-side Hopper, Offset Panel-side Hopper, Covered Ribbed Hopper, Fish-belly Hopper(not sure if SHS even got to release this one.) The good thing is many of these products share common parts.
Plus, there were several products in various stages of development before SHS shut down: E7's, Bay Window Caboose, 4-6-0 and a rumored RS-1.
So, it looks like a loooooong time before anything "new" will be coming from MTH.
Rusty