We are getting our first spoilers for next season at the CW upfront presentation.
More on the Scooby Do episode from Deadline.
From TV Guide.
During the presentation, Jensen Ackles said that he's the Fred and Jared Padalecki is the Daphne, which may have been a joke, but also may not have been, since they're really going to do a Scooby-Doo episode.
We have the promo for the CW for next season. Note, if you blink you will miss the 2 0.2 seconds of Sam and Dean.
We will update this article as more information becomes available.