The creators of the series, Matt and Ross Duffer, have confirmed the duration of the last four episodes of the fifth season of "Stranger Things."
The runtime looks like this:
Episode 5 "The Shock-Jock" — 1 hour 8 minutes
Episode 6 "The Escape from Kamazotz" — 1 hour 15 minutes
Episode 7 "The Bridge" — 1 hour 6 minutes
Episode 8 "The Right Side Up" — 2 hours 8 minutes
Thus, only the final episode will approach the format of a feature film, although it will not be the longest in the history of the series. For comparison, the final episode of the fourth season lasted 2 hours 22 minutes.
The first part of the fifth season of "Stranger Things" is already available on Netflix. The second part will be released on December 26, and the final episode will be available on January 1.