Next really big show is probably the Florida Supershow in Tampa. But manufacturers don't bring every model to the show, what is there is more like new stock for the dealers, and it will mostly be what the dealers want to carry.
Some time after the Tampa show, there will be a big show in Houston, but what shows up there will mostly be stock ordered by regional dealers selling at the show.
One of the problems finding specific floorplans from brochures at the dealerships is that some floorplans don't get made until a dealer orders them.
For some manufacturers, there will be models in the brochure for which only a few examples were made, and in some cases something in the brochure didn't get manufactured because the factory failed to convince a dealer to buy it, and no customer ordered it. At the level of DutchStar and Allegro Bus, most coaches are custom made on customer orders. Dealers will stock only what buyers have been ordering, with colors and options that move well.
Tom Test
Itasca Spirit 29B