Thanks to the GI Joe club, some better photos of the SDCC 2012 GIJoe/Transformers exclusive Shockwave HISS tank have surfaces revealing many of the accessories that will be coming alongside the custom vehicle. Good luck getting your hands on one of these, collectors. It is not going to be easy.
It appears the set will include the following:
HISS tank with custom Shockwave cannon turret
Destro
Constructicon colored BAT
Suitcase of cash
2 guns for Destro
2 contructicon colored weapons for the BAT
3 Energon cubes and cart to move them
A small scale Soundwave cassette player
3 cassettes to put in Soundwave