Pixar made some exciting announcements at its D23 panel earlier today, and in addition to revealing the voice casts for the upcoming films The Good Dinosaur and Inside Out, the studio also revealed a couple of cast additions to the highly anticipated sequel Finding DoryFinding Nemo director Andrew Stanton returns to the director’s chair, and the story takes place roughly a year after the events of the film and focuses on Dory’s quest to find her parents.  Voicing said parents will be none other than Diane Keaton and Eugene Levy, with Modern Family star Ty Burrell also onboard to play a young Beluga whale.

Hit the jump for more, including why the ending of the film has reportedly been changed.  Beware of possible minor spoilers. [Update: We've added concept art and the official logline for the film after the jump as well.]

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Image via Disney

Here's the official logline for Finding Dory:

The all-new big-screen adventure dives into theaters Nov. 25, 2015, taking moviegoers back to the extraordinary underwater world from the original film. Finding Dory reunites the friendly-but-forgetful blue tang fish with her loved ones, and everyone learns a few things about the true meaning of family along the way.

While adding Keaton, Levy, and Burrell to the voice cast of Finding Dory is certainly exciting, it appears that some considerable tweaking has been going on behind-the-scenes, and not for the reason you'd expect.  It’s no secret that Pixar goes through many iterations of a film before it finally makes it to the screen, but it appears that the studio is making some changes to Finding Dory as a result of the recent SeaWorld documentary Blackfish.

The doc exposes the harsh consequences of habitat-living for marine animals and takes SeaWorld to task for its treatment of said inhabitants.  As such, the New York Times reports that screenwriter Victoria Strouse has made some adjustments to Finding Dory's finale, which apparently takes place in a marine park.  In the new finale, the pic’s characters will now have the option to leave the aquatic center should they desire to do so.  With Finding Dory’s 2015 release date still a ways off, it’s important to note that this finale could be altered significantly in the ensuing years, and the location could be changed entirely.  Nevertheless, it’s nice to see that Pixar is acknowledging the questions raised in Blackfish.

Finding Dory opens in theaters on November 25, 2015.

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Image via Pixar