In the heat of everyone still enjoying Kingom Hearts 3, Nintendo has silently released an update for Super Smash Bros Ultimate. The game adds some changes to the spirit board, and more importantly, adds Piranha Plant to the roster as the 75th playable character. Admittedly I am a bit surprised since they seemed to be teasing his addition for sometime in February.
If you havent already, you can still register your game with Nintendo to receive Piranha Plant until January 31. Then all you need to do is update the game to version 2.0.0 and you will unlock Piranha Plant on startup.