'Stranger Things' updates: Season 2 now available on Netflix; what to expect?

Promotional photo for "Stranger Things" season 2 Facebook/StrangerThingsTV

The second season of the Netflix original drama thriller "Stranger Things" recently premiered, and many fans are excited to binge-watch after seeing its final trailer highlight a bigger threat and new comrades. Prior to this, there had been ongoing forum discussions online tackling speculations for the second season.

The trailer featured talks about the world coming to an end and judgement day. Netflix also released an extra sneak peek on their website. In the teaser, Director Shawn Levy said, "Stranger Things season 2 is very much rooted in season one, but the threat is bigger, it's scarier."

Screenshot from "Stranger Things" season 2's extra trailer on Netflix Netflix

The second season takes place a year later, with Will Byers (Noah Schnapp) back with the gang. There were several fans theories uploaded on the internet. One speculation had something to do with Will's odd behavior. There were people suggesting that the youngster is a monster after being infected by the creatures in the Upside Down world.

Another theory talked about the girl with psychokinetic abilities, Eleven (Millie Bobby Brown), being a Demogorgon who is on the side of the humans.

"Stranger Things" season 2 also welcomes new cast members. Such include Sadie Sink who takes on the role of Max, a new student at Hawkins High School. It was revealed in the trailer that she would be friends with the four main characters. "Power Rangers" star Dacre Montgomery is also part of season 2 as Max's brother, Billy, while comedian Paul Reiser portrays the role of Dr. Owens, who is a scientist at the Department of Energy.

Joyce Byers (Winona Ryder) also has a new love-interest named Bob Newby in season 2. The character is played by "Lord of the Rings'" Sean Astin aka Samwise Gamgee.

"Stranger Things" season 2 is the anticipated continuation of the successful thriller drama series by Netflix. It premiered on Friday, Oct. 27.