In an interview with The Associated Press, The Incredibles director Brad Bird is asked about a possible sequel:
I love the world. I love the characters, and if I could come with a story that was as good or better than the original, I’d go there in a second. I have pieces of things that I would love to see in a sequel, but I haven’t got them all together yet, and I certainly wouldn’t want to come out there with something that is less than the original. … Sequels are not part of the business plan at Pixar. It’s all about the filmmakers being passionate about going somewhere.
His and Pixar’s next anticipated film, Ratatouille, opens in theaters on June 29.
Source: The Associated Press