Although there have been rumblings that some filming had already taken place for the fourth season of Netflix's Stranger Things last year, reports indicate that production officially began in Atlanta, Georgia yesterday, January 7th, and will continue through August 5th.
Apparently the season is shooting under the title of Tareco. A tareco is "a little tough biscuit" that originates from the northeast region of Brazil, and it surely has nothing to do with the actual content of the season.
Netflix has been said to be aiming to get Stranger Things season 4 released onto the streaming service sometime in 2020. Given that production won't be wrapping up until early August, we probably shouldn't expect to see the season until December… if it's ready before the end of the year at all.
No one involved with Stranger Things has confirmed that filming is taking place, but if cameras are rolling we should be seeing some kind of announcement video soon.
Millie Bobby Brown, Finn Wolfhard, Sadie Sink, Caleb McLaughlin, Gaten Matarazzo, Noah Schnapp, Charlie Heaton, Natalia Dyer, Joe Keery, Priah Ferguson, Cara Buono, Winona Ryder, Maya Hawke, and David Harbour are all expected to return for Stranger Things 4.
TVLine has reported that new characters this season will include three teenagers – a metalhead, an "entitled jock", and someone who "sounds an awful lot like the twin of FAST TIMES AT RIDGEMONT HIGH stoner Jeff Spicoli" – plus an adult who "possesses characteristics that suggest he will figure prominently in a certain storyline set far, far away from Hawkins."