There's not much new info but there are a couple of interesting tidbits.

Johnny uses cards, and if you hit the cards with mist finer you get an additional hit (you can see this in the announcement trailer).

Apparently they changed how you will gain burst meter? And the regular burst will also be enhanced.

The other characters will get new moves "throughout the season 3 updates"

Faust is storing an item with his new move.