All bets are off for Supernatural now that it's in its final season with none other than God as the big bad. God revealed back in Season 14 that Sam and Dean were his favorites of the many pairs of Winchester brothers in the many worlds he'd created (before Sam shot him, anyway), which suggests that God had messed with all the others similarly to how he messed with our Sam and Dean. Well, according to Supernatural showrunner Andrew Dabb, Season 15 will showcase some of those other worlds and another Dean.
Speaking with TVLine about Supernatural Season 15, Andrew Dabb said this:
We will be jumping around to a couple of different worlds, some we visited before and some we haven’t, 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. [Also] a version of Dean not from our world, who we’ll be getting to know a little bit better in the upcoming episodes.
Well, Supernatural may not be part of the "Crisis on Infinite Earths" extravaganza that's brewing for a handful of The CW's other shows (although a Supernatural star did land a role in the event), but it too will be visiting multiple worlds in the 2019-2020 TV season! The series has showed alternate worlds and realities in seasons past, and the first alternate Dean actually appeared all the way back in Season 5.
Interestingly, Andrew Dabb's comment that there's a version of Dean that fans will get to know better in "upcoming episodes" suggests that this alternate Dean won't be a one-and-done character. Also, fans who have kept up with all of the trailer footage released for the final season so far have already gotten a glimpse of Dean 2.0.
Apparently, the scruffy Dean seen in the "Last Ride" trailer is the alternate Dean who will appear. If you missed the trailer, take a look, and keep an eye out for the scenes with Dean in very red lighting:
If we assume that all the shots in the red lighting are of the same world, then it looks like we might be getting an alternate Sam as well. That said, given the decidedly evil look on his face, I'm guessing that might be a reality in which there is a Dean Winchester fighting the good fight and Lucifer in a Sam Winchester vessel, much like the Season 5 episode that first featured a Dean 2.0.
There's also a quick shot of Adam at a table with Adam, so there may be more to the return of the third Winchester brother than the simple fact that God sprung open all the doors in Hell, including the door to the cage that has contained Michael in Adam for the better part of a decade.
The stakes have never felt higher on Supernatural, and the final season will clearly pack in more than just 42 minutes of nostalgia once a week until the final credits roll in the spring. Find out what's in store for the Winchesters and Co. when new episodes of Supernatural air Thursdays at 8 p.m. ET on The CW.