The official Press Release for Supernatural Season 13 episode 16.
 
 SUPERNATURAL 13.16 “Scoobynatural”: Sam (Jared Padalecki), Dean (Jensen Ackles) and Castiel (Misha Collins) are transported into the animated world of Scooby Doo where they join forces with the Scooby gang to solve a ghostly mystery. Robert Singer directed the episode written by Jim Krieg & Jeremy Adams.
 
The original trailer
 
Entertainment Weekly has posted the first pictures from Supernatural season 13 episode 16.
 
It's "ScoobyNatural!"
scoobynatural
 
EW01
 
EW02
 
EW03
 
 
 
Rather, there’s an entirely different monster in charge this time around, and trying to figure that out will be the very mystery that Sam, Dean, and Castiel work with Scooby and the gang to solve.
 
Finally, the cross over that has been in the works for over a year! Are you looking forward to Sam and Dean meeting the Scooby gang? Will Dean cozy up to Daphne? What monster pulled them into this new world? Let us know in the comments or in the discussion thread for episode 16.