It addresses several small issues and includes the option to turn your fighter transparent to "get a better view" of your foe. The DLC gives you bosses to play.
"This update resolves several small issues reported by players and includes the ability to make your fighter transparent in order to get a better view of your opponent," said producer Josh Miller. The Duke DLC pack lets you play as any of the game bosses.
You can select them for play in both online and offline multiplayer game modes and the Duke DLC pack will be on the PlayStation Store later this month. We've just been slugging away with Move's The Fight: Lights Out so givea sizing up.