I suppose the team could also be teasing a remaster of the original game, or a collection of the previous Psychonauts entries.
Over the weekend, Microsoft’s Australian Xbox account shared a cryptic tweet, and this communication has led many to speculate a Psychonauts 3 announcement is imminent.
Now, if we assume that the Psycho part of the text denotes the naughts in this naughts and crosses game, we get, yes you guessed it, Psycho-naughts, or Psychonauts.
Put it all together, and you get Psychonauts 3 (either that, or some kind of Vin Diesel fronted Psycho spin-off, but what would Xbox want with that).