A short clip from an upcoming episode of My Little Pony: Tell Your Tale has been released on the My Little Pony: Tell Your Tale YouTube channel. It seems to be a montage of the Mane 5 doing various leisure activities together set to the "Work Work Work" song from about 50 episodes ago.
According to the YouTube Content ID system, the episode is titled "Ponytropico" and will be the 52nd episode.
Twitter: @_overcast07
