I just got back from the NTS a few minutes ago. I do have 11 GP9's in NP now, but I plan on repainting a bunch of GP7's in NP, and Rob Kluz of Ztrack said that he seen samples of AZL's Torpedo Tube GP7's.
Nothing new for NP in Z at the show, however AZL announced a GP30, which means all the people that don't like the wider GP35',s now have a cool model coming. RDC's were also announced for next year. A bunch of high cube road names, and they showed the auto racks. Also they announced 28K Gal funnel flow tank cars, and a few other things. They also have a bunch of new brass like NYC and SP passenger strings. MTL was showing the SD40-2, which looks good.
Bob Knight had brought bridge parts to fix my kit, and showed all kinds of neat stuff. The bay window caboose in N looked fantastic, with Z to follow. Lots of other Z Scale cabooses and other stuff coming from TrainCat. BLMA was there, but had no Z Scale, as well as Marklin without Z.
Out of the whole NTS, all scales, Z Scale modules took 1st, 2nd, and 3rd, and Brad of Z Central Station won the Pizzaz award for his volcano module.
I had a great time, as did all in attendance.
-Robert