The May 30, 2014 release date does give a hint that Finding Nemo may be the one to get a sequel (the original launched 11 years prior on that same day). Despite the fact its' been joked around several times by Ellen DeGenres on her talk show, I really think that there is a very solid chance we will see the continued adventures of Marlin and Dory. Back when it was released, the film broke several box office records, opening to $70 million and ending up with over $330 million domestically and over $860 million worldwide, which at the time was the highest-grossing animated film of all time. Today, the film is fourth on the list (behind Toy Story 3, Shrek 2, and Ice Age: Dawn of the Dinosaurs). The only problem is that it seemed like the story ended like there was no way to continue it, but, didn't the same thing happen with Cars?
Fans have been clamoring for a sequel to The Incredibles, and the November 27, 2013 release date would land a sequel nine years after the first. The biggest advantage is that the first Incredibles ended with a mysterious "Underminer" character that led into the end credits. But, director Brad Bird has been busy with the upcoming revival of Mission Impossible. If Pixar were to let the fans decide, it probably would land in this films' favor.
There is also another possibility that we could see a sequel to WALL-E. Like Incredibles, Wall-E had an ending that could result in the further exploration of earth by its' "new inhabitants". Wall-E also earned the best non-Toy Story critical reviews by critic aggregator Rotten Tomatoes (98%), and earned over $630 million worldwide. The hard part is that director Andrew Stanton may let Finding Nemo get the sequel first, but, five years is a typical wait for an animated sequel (though we've waited longer for Pixar films).
Personally my favorite Pixar film. The only advantage to Up getting a sequel would be the original getting a Best Picture nomination at the Oscars, the first animated film ever to recieve a nomination for that category since Beauty and the Beast (and the second one to ever get it). However, once again, it seems like it already had an ending, how would they continue on from here?
Those are my top four contenders for a sequel, as the rest don't look like they will get one anytime soon. Ratatouille and A Bugs Life were the lowest-grossers, so I shouldn't think Pixar would revisit them. Monsters, Inc. is getting its' prequel in less than two years, and it would be too soon to expect a Toy Story 4 (though rumor has been spreading). Cars 2 was just out, so a 3 won't happen for a long time.
