Probably they will release a structure deck of axel browdie with his best volcanic cards. Or else good luck goong 3 times through an old bad box for getting 3 volcanic rockets.
We did get several that included main/mini box URs, such as King's Resonance (Red Dragon Archfiend), Spellbound Silence (Silent Magician LV8), Return of the Red-Eyes (Red-Eyes Slash Dragon), and Swordbound Silence (Silent Swordsman LV7).
So we could very well get a Volcanic structure deck starring Doomfire...