Stranger Things will likely go beyond 4 seasons, per producersThe Internet let out a collective gasp when Ross Duffer, co-creator of Stranger Things with his brother Matt, told New York Magazine there would only be four seasons of the Netflix hit. “We’re thinking it will be a four-season thing and then out,” Ross told the magazine.
But now The Duffers and executive producer Shawn Levy tell EW that there’s a good chance the show will go past that timeline… but not by much. “Hearts were heard breaking in Netflix headquarters when the Brothers made four seasons sound like an official end, and I was suddenly getting phone calls from our actors’ agents,” says Levy. “The truth is we’re definitely going four seasons and there’s very much the possibility of a fifth. Beyond that, it becomes I think very unlikely.”
The Duffer Brothers just want to make sure they don’t wear out their welcome… or credibility. “It’s not wrapped up this season,” says Ross. “I think [season 2] will be a satisfying end but there’s still danger out there. There’s too much to deal with in one more season. If we’re able to, there will be at least four, there could be more. I think there’s going to come a point where why aren’t these people leaving Hawkins? Like we’re going to stretch credibility. It wasn’t intended to be a seven-season thing.”
http://ew.com/tv/2017/09/28/netflix-stranger-things-how-many-seasons/