However Pixar has come forward saying they will release more original films and less sequels.
Pixar President Ed Catmull told entertainment website 'Buzz Feed': "For artistic reasons it's really important that we do an original film a year.
Every once in a while, we get a film where we want or people want to see something continuing in that world - which is the rationale behind the sequel. They want those characters, which means we were successful with them. But if you keep doing that, then you aren't doing original films."
He added: "We're going to have an original film every year, then every other year have a sequel to something. That's the rough idea."
Pixar's next original film, 'The Good Dinosaur,' is due out May 2014. It will be directed by first timer Bob Peterson, who worked on a range of previous Pixar films, and is about a world in which the dinosaurs never became extinct.