No.. Its not a April's fool joke - Studio Ghibli is really back with a new movie. It's just not what you might expect. Instead of the usual full length movies that we are used to seeing this is actually an adaptation of the worlds oldest manga dating back to the 12th or 13th century titled "Choju Jinbutsu Giga or Scrolls of Frolicking Animals".
While the video is quite short it is still delightful to follow the animals around in this story of forest fun. Best part is that you can see it right now, here at Bento and Co -