According to this thread on minizracer.com forum Kyosho will release new bodies for the racers and the F1 on the Shizuoka Hobby Show 2006 (debut mai).

There are some beautifull bodies in the list:
- GZox & Xanavi 350Z SuperGT
- Porsche 934 Vaillant
- Porsche 935 Martini
- F1 Ferrari and McLaren (2005)
- Subaru Impreza WRX STi 2006 version


Image from the rcc51.com webpage

You can find other images of the bodies on this webpage.

Another thing that was remarkable on the same website were pictures of the Mini MiniZ. Looks like a complete different chassis with small type bodies, more info will be released in near future...