However, the trademark is filed for computer game software, and we still haven't heard a peep as to just what the next expansion is going to be. Does Heroes of the Storm sound like the next Warcraft project? Or perhaps an upcoming expansion card set for Hearthstone: Heroes of Warcraft? It certainly doesn't sound like a title for anything Diablo or StarCraft related, and Wrathion's made his fair share of references to fire raining from the sky, which sounds pretty stormy to me. While we don't have a definitive on whether or not this trademark will be approved and filed, it definitely gives us some more food for thought.