What's most interesting about this game for me is the gem system, that brings an almost RPG stat-building exercise into the game. There's 75 gems in total to be found in the game, split between boost gems (activated when you meet certain in-battle conditions), and assist gems (always active).
These gems can have levels, too, with the more powerful gems having more profound effects on your fighters.
Sounds like a hardcore fighting game indeed. We have to wait until next year for this one; in the mean time enjoy the screens!