One of the items that will be released is a beautiful model of WDW RR Engine No. 1, the Walter E. Disney, to run on O gauge 3-rail. As most here know, the MTH "Old-time" 4-6-0 was directly modeled on this particular locomotive (The styrofoam packing even says "Disney" on it). However, until now, it was never painted in the colors it wears at the park--a bright fire-engine red with brass and black accents. Here's is a photo from MiceAge showing the engine:
The price is fairly reasonable for a Disney piece (I'm hearing about $450). This is the only accurate model of any Disney engine ever produced--all others being nothing more than off-the-shelf models with similar paint schemes applied (think the 1990 Lionel Disneyland General).
More photos of the exhibit can be seen staring here.