https://www.cnet.com/news/avengers-4-endgame-is-the-new-title-but-what-does-it-mean/

To some, the photo appeared to be just an almost-empty set. Put those ladders away, maintenance guys. But other fans looked into the image with an almost psychic gaze. Twitter user Patrick Smith sketched out the word "ENDGAME" using shelves, ladders, an archway, and even Russo himself.

"I like to follow movie news and rumors, and I had heard several possible titles and squinting at the photo, I could see Endgame fitting if I took a few artistic liberties," Smith told me Friday after his guess got confirmed. "So I took a quick screenshot, outlined how I saw the name fitting and fired off a reply."