PM All-Star/Squad Strike has been added, alongside a Timeless Stardial stage. No Rocksteady yet.
New content! New Squads Mode: Form a Squad by choosing your 3 favorite Brawlers and engage in a dynamic fight against your opponent's Squad! Once a character is KOd, the next will take their place in battle! New Game+: Repeat the story with all unlocked perks and cosmetics. Added an increased...
store.steampowered.com
EDIT: seems the Timeless Stardial stage is NOT here? This better not be an unlockable...
EDIT 2: You can't do CPU v CPU in All-Star it seems...