The film will be animated, and follows an alien race who journeys to Earth to protect the planet from an upcoming attack by their enemies, another alien race known as the Bardoon. There is no further information about the movie at this time. It was believed to tie-into The Avengers 2, but because the film is animated, it is unclear how those ties will pan out. It is also unclear if Pixar is at all involved in the film.
This is the fourth movie that Marvel Studios currently has in various stages of production. The other three titles include Iron Man 3, Thor 2, and Captain America 2.
We'll be sure to update you as more news breaks from the Iron Man 3 panel going on right now at the San Diego Convention Center.
Guardians of the Galaxy was released August 1st, 2014 and stars Chris Pratt, Zoe Saldana, Dave Bautista, Vin Diesel, Bradley Cooper, Lee Pace, Michael Rooker, Karen Gillan. The film is directed by James Gunn.