Avengers fans get ready. There’s a new Iron Man poster for the highly-anticipated sequel Age Of Ultron, with a promise of more to come.

Robert Downey Jr posted the picture online and teased that there will be a “big announcement” in a week’s time.

Marvel has already announced its upcoming movie schedule right through to 2020, so news of a fourth Iron Man movie seems unlikely.

Fans have begun speculating the announcement could be more general Marvel news, like the identity of the next actor to play Spider-Man or another comic book character such as Captain Marvel or Black Bolt. Vin Diesel has already hinted he is in line to play Black Bolt.

But it could be a new trailer for Avengers: Age Of Ultron that finally reveals what Avenger The Vision, played by Paul Bettany, will look like.

(Marvel/Disney)
Avengers: Age Of Ultron (Marvel/Disney)

With seven days in between, the countdown could lead to more posters of characters Captain America, Thor, Hawkeye, Black Widow, Nick Fury, Scarlet Witch and Quicksilver, while fans wait…

Avengers: Age Of Ultron is released on April 23, 2015 in the UK.