User blog comment:AVP3/Final Episode of Adventure Time/Adventure Time Movie/@comment-5242921-20130802201326/@comment-5242921-20130807210036

Actually, he has a point here.

Season 5.2, or Season 6, is apparently sealing off character arcs.

When they've finished Season 5.2, we'll have seen Marcy's arc, BMO's arc, PB's arc, Simon's arc, Finn's arc, Jake's arc, and FP's arc - all the characters at once will have their historical development complete and current issues resolved.