Update 7/12:

Millie Bobby Brown has denied claims that she has been cast in Marvel's The Eternals

As reported by ComicBook , Brown hosted a fan Q&A on her Instagram account, in which she claimed to have no knowledge of the casting. "Everybody thinks I’m going to be in a Marvel movie," said Brown. "Not that I know of. My family and I have no idea. So I just want to let everyone know…that I’m not as of right now.”The term 'as of right now' allows a certain amount of ambiguity - Brown may have been approached by Marvel, perhaps, but has not yet committed to a role - but for the moment it appears that the official line is that Millie Bobby Brown is not part of The Eternals cast.

Marvel Cinematic Universe: Every Upcoming Movie and TV Show 23 IMAGES

Marvel's The Eternals at SDCC 2019

The Eternals Explained

Millie Bobby Brown -- who plays "Eleven" on Netflix's Stranger Things and recently starred in Godzilla: King of the Monsters -- has reportedly been cast in Marvel's The Eternals.According to Variety , Brown will join Angelina Jolie, Kumail Nanjiani, and Richard Madden in the cosmic comic book movie. (Disney had not responded to IGN's request for comment at time of publish.) Keanu Reeves and Salma Hayek are also reportedly up for roles in the Disney film, which will be directed by Chloé Zhao.While none of the aforementioned actors' roles have been announced nor their casting confirmed, Variety reports that Marvel Studios is expected to announce the full cast -- along with their Phase 4 film lineup -- at next week's San Diego Comic-Con So far, the rumor mill has pegged Jolie as playing Sersi and Madden as Ikaris.If you don't know much about The Eternals -- and, let's face it, most people likely don't -- check out this expansive breakdown on who they are and how they came to be in the Marvel Comics.And forcoverage of Millie Bobby Brown and the gang in the latest season of Stranger Things, check out our review of Season 3 , our explainer on the season's ending our theories on The American and THAT character's fate , and whether there will be a Season 4