Now, that doesn't leave us with much to go on, but some context would indicate they may be teasing the release of the first Avengers: Infinity War trailer.
The actor, who plays Spiderman in the Marvel Cinematic Universe, posted a video to his social media accounts of himself opening a package from Mark Ruffalo. In a new Vanity Fair cover story they take a deep dive into the past and present of the MCU, from the first Iron Man to this year's Thor: Ragnarok.
Though it should be noted, that Avengers 4 is far from the end for the MCU. Watch his charming little display below, and get a look at the officially-released poster while you're at it.
Directors: Avengers 4 will continue with the same creative team that gave Marvel its successful hits Captain America: The Winter Soldier and Captain America: Civil War.
In an interview with Vanity Fair, Feige said, "Marvel is 22 movies in and we've got another 20 movies on the docket that are completely different from anything that's come before - intentionally. I know it will not be in ways people are expecting", Feige teased.
The Marvel movie that brings together all The Avengers, Guardian and everything else in between together to battle one massive galactic battle which has been building up for the last 10 years.
What do you think of this new teaser poster for Avengers: Infinity War?
The poster, which you can see below, falls in line with the one sheets for both The Avengers and Avengers: Age of Ultron, focusing exclusively on the Avengers "A" and a specific color scheme.