We know that the dev team had interest in making that happen, but we never heard anything official. (gonintendo.com)
Now they didn't say anything official about a reveal or new details on existing games, but with this tweet, it seems like something is up. (gonintendo.com)
I wonder if it's just the side effect of losing weight / fat or something more but I haven't read anything official about the cause! (wickedstuffed.com)