There are still over three years until the Captain Marvel movie hits theaters on November 2, 2018. By that time we’ll have seen Avengers: Infinity War Part 1, a Spider-Man reboot, three new Star Wars movie and even an Avatar sequel. Probably.

That’s a long time before we need to start worrying about a character, but, a new rumor says not only has Marvel Studios secretly cast an actress to play the Captain Marvel, we’ll see her very soon. This is an unconfirmed rumor but, if it’s true, it might be a spoiler for the Marvel Cinematic Universe 2015 movies. Beware and read more below.

The rumor comes from Latino Review scooper El Mayimbe’s Instagram.

Embed not working? Basically he says Marvel has cast Captain Marvel, she’ll appear in Avengers: Age of Ultron, and Marvel has a basic story laid out for her solo film. There’s no writer yet attached but comic book writer Kelly Sue DeConnick tried to get the gig and Jim Starlin, a long time Captain Marvel artist and writer, has been hired as a consultant.

This is a continuation to a rumor we’ve heard in the past. Last summer, Badass Digest reported that Age of Ultron would end with Captain America assembling a new Avengers, and Captain Marvel would be part of it. What we do know is Joss Whedon has hinted there are heroes in the movie who haven’t been seen before. Could he mean Captain Marvel? The good news is, we only have to wait a month to find out.

Avengers: Age of Ultron opens May 1. Captain Marvel opens November 8, 2018.