The reveal came after one billion birds were flung by you lot in the game over the past 48 hours.
Doing this unlocked the announcement, including the details of the voice cast, as well as a sneak peek at the characters that will star in the film.
As you can see in the image above, the birds in the movie will have legs to stand on, and wings to flap, too - unlike they do in the game.
Apparently, the bad piggies don't get legs, though. You know, because they're bad, I suppose.
The cast includes Josh Gad in his first animated role since Frozen, Peter Dinklage from Game of Thrones (and Destiny - "That wizard came from the moon"), and Maya Rudolph who previously appeared in Bridesmaids.
The Angry Birds movie will debut in the US on July 1st 2016.