'Stranger Things' star Noah Schnapp warns that fans will be "truly devastated" watching the final season

The Duffer Brothers, who created the series, also executive-produced the stage production, which is a prequel, and said that it will link up with the upcoming season. 

"We were writing season five as this show was being written and going into workshops and all of that, so the main thing we were working on with Kate and [director] Stephen [Daldry] was just making sure that all the mythology lined up, so that when you see the play and see season five, whatever order you see it, it all links and connects," Ross Duffer explained. "Also that the play starts to tee up things that are going to be big reveals in season five without giving everything away, because we want season five to be able to stand on its own obviously. So it was a tightrope to walk for sure."

He continued to tease, "It’s the end of a long journey, for everyone who made the show and also for those characters. It is thrilling and it’s our fastest start we’ve ever had — our heroes are in action right away, but I think ultimately, hopefully, it’s our most emotional season yet. Those final episodes, the goal is that they hit pretty hard because in a lot of ways it’s about the end of this journey we’ve all had and also the end of childhood."

Shawn Levy, who directs and executive produces the series, reflected on the last day of shooting, saying, "We sort of knew that this was the end of a chapter; we might all go on to great, successful experiences but you’re lucky if you get one Stranger Things in your life. That’ll never happen again and I think we all know it and all cherish it."

The final season of Stranger Things is scheduled to be released this year on Netflix.