V21: A new arena challenge. (Unlocked by sneaking into Delta Mu and talking with Marceline) (This one has a little surprise after you beat it, head to Delta Mu's entrance and talk with the security guard after beating the challenge to see what it is. (May want to grind first. Trust me))
New after class events for Angel and Mimi (This is Angel's last after class event, as for Mimi... well... I'll let what happens there be a surprise)

V22: (Patreon) A new side story dungeon. (Have to reach rank 5 of Kira's after class events to access it), New side events for Kira and Azure.