Mild Hype

It's likely a ways off, and it's an arcade version. But a few things that I've heard about it(note: Not confirmed):

Reboot of the series, so pretty much any plot is fair game.

3 versus 3 combat. Likely not mandatory, but that'll make fights a little more intense.

Confirmed characters are Warrior of Light, Onion Knight, Terra, Cloud, Lightning, and Y'shtola (An NPC from XIV). Also, Terra seems to be using her sword.

The battle system is apparently being made from the ground up. Hopefully they don't screw it up.