After the release of Stranger Things season 4, the Duffer Brothers already have a plan for when production on Season 5 will begin. The creators of the series revealed in an exclusive interview with Collider that the writing for the fifth season will begin this August.
“We're going to take a little vacation in July,” Ross Duffer told Collider’s own Steve Weintraub, “And then we're going to come back. I know that the writer's room is going to start in that first week of August.”
The creators have also revealed that season 5 will be shorter in an interview with Happy Sad Confused podcast, "The only reason we don't expect it to be as long is because if you look at it, it's almost a two-hour ramp-up before our kids really get drawn into the supernatural mystery," Matt said. "You get to know them, you get to see them in their lives, what they're struggling with, adapting to high school, and so forth. Steve's trying to find a date, all of that. None of that obviously is going to be occurring in the first two episodes of [Season 5]."
"For the first time ever," he continued, "we don't wrap things up at the end of [Season] 4, so it's going to be moving. I don't know that it's going to be going 100 miles an hour at the start of 5, but it's going to be moving pretty fast. Characters are already going to be in action. They're already going to have a goal and a drive, and I think that's going to carve out at least a couple hours and make this season feel really different."