[UPDATE: Since press time, Netflix has tweeted that the Duffer Bros. are not leaving the series.

Moviefone's below story never said they were dumping or leaving the series or suggested they were quitting the show. Rather, the below report concerns that the showrunners are likely to step down from their day-to-day showrunning duties after the third season, while still remaining with the show as Executive Producers.

Between now and Season Three's lifespan, circumstance may change for the creatives involved. At the same time, Moviefone stands by our sources and our story -- the language of which has been updated with clarification of the above.]

The Upside Down is going to get a bit more bleak for fans of Netflix's "Stranger Things."

Season 3 of the hit series will likely be the last for the Duffer Brothers in a showrunner capacity, according to sources with knowledge of the production.

Should this come to pass, the third season will be the last to feature the show's creators in as active a role as they had in previous seasons. They will likely oversee the Writers Room and contribute scripts while directing at least the Season 3 premiere and finale. (Should there be more seasons after their departure, they will retain the traditional Executive Producer credit.)

According to our sources, Matt and Ross Duffer's deal with Netflix requires at least two more projects from the prolific talents, and starting to develop and produce one of those is a significant factor behind their eventual transition away from Eleven and Co.

This is not an unusual thing for show creators to do. Some showrunners, after achieving a certain level of success (think J.J. Abrams during his "Alias" and "Lost" days, and before transitioning to feature films), move on to other projects and hand over the reigns while also retaining an EP credit on their series.

Our source also revealed that the Duffer Brothers, who made their mark early in their careers with a popular feature spec called "Hidden" that was made into a very little-seen 2015 film, have taken meetings in Hollywood regarding potentially directing another feature film.

Their departure as showrunners does not mean that "Stranger Things" ceases to produce new episodes after Season 3; the show could and may likely go on after its creators leave -- as many shows have done before (think "Lost.")

While there is a chance "Stranger Things" could call it quits after a third season, it's seemingly unlikely as of press time.

So if there are more stories to tell in and around Hawkins, Indiana, you can bet your Eggos they will likely be told with the help of a new showrunner.

"Stranger Things'" third season, which will consist of eight episodes, is expected to air sometime in 2019.