The writers have given several interviews about what to expect from season 15.
Interview: Supernatural Showrunner Andrew Dabb Talks Romance, Returns, Roadhouse and More in Season 15
Got any scoop on Supernatural? –RR
The show will kind of be having its own Crisis on Infinite Earths! “We will be jumping around to a couple of different worlds, some we visited before and some we haven’t,” co-showrunner Andrew Dabb reveals, “as we kind of get to the bottom of what Chuck’s been doing not just to our guys, but on a much larger multi-dimensional scale.” On a related note, the scruffy Dean spotted in this trailer is “a version of Dean not from our world, who we’ll be getting to know a little bit better in the upcoming episodes.”
From Entertainment Weekly Supernatural boss says Adam isn't the only one escaping the cage
This page will be updated as more interviews become available.
For more interviews and spoilers on the season check out our Spoiler Page and the discussion thread for season 15.