Whatever's going to happen in 2019's follow-up to Avengers: Infinity War, it's locked now. Filming has officially wrapped.
But as with most things Marvel, it's not quite so simple. Directors Anthony and Joe Russo announced the completion of their work on Twitter with a hashtag and an image.
SEE ALSO: There may be some hidden 'Avengers 4' clues in this Russo brothers set photo
It's the image that has people talking. What is it? What's it supposed to be teasing? Why are you like this,...