There's no mentioning of the actual model itself though. But since the box art is about to come out, there must be some definite development on it already - at least the developers had plan out the number of runners to be included in order to determine the box size.
To be announced at Shizuoka Hobby Show maybe? ^^
Good Press June issue was released on May 6th at 590 Yen (inclusive of tax).
Information is from GToys Blog. Image is from ToyWorld Forum.
