From www.wdwinfo.com

Finding Dory, the sequel to Finding Nemo, announced today
Apr 2, 2013

Finding Dory, the sequel to Disney-Pixar's hit Finding Nemo, was announced today and will arrive in theaters November 25, 2015. Ellen DeGeneres, who says she is excited about this sequel, will once again voice Dory. DeGeneres said, "I have waited for this day for a long, long, long, long, long, long time. I'm not mad it took this long. I know the people at Pixar were busy creating Toy Story 16. But the time they took was worth it. The script is fantastic. And it has everything I loved about the first one: It's got a lot of heart, it's really funny, and the best part is - it's got a lot more Dory."

The story will take place roughly one year after Finding Nemo ended, and will include original characters Marlin, Nemo, and the "Tank Gang," will be back. Several new characters will also be in the script, and the movie will partially take place along the California coastline. Andrew Stanton will return as director.