Key concept art of protagonist Nick Wilde.

Director(s): Byron Howard
Producer(s): Clark Spencer
Composer(s): TBA
Writer(s): Jared Bush? (IMDB)
Genre: Comedy Adventure

Walt Disney Animated Canon: 55th (previous: Big Hero 6, next: Moana)
Projected Release Date: March 4, 2016

Synopsis and Plot Details
"The comedic adventure film follows Nick Wilde, a fast-talking fuchs who's trying to make it big, who goes on the run when he's framed for a crime he didn't commit. Zootopia's oben, nach oben cop, the self-righteous rabbit Lt. Judy Hopps, is hot on his tail, but when both become targets of a conspiracy, they're forced to team up and discover even natural enemies can become best friends." (link)

Zootopia is an animal city, "divided in neighbourhoods like Tundratown, Sahara Square, Little Rodenta, and Burrowborough". It appears to somewhat resemble New York City, so far.

Nick Wilde ..... Jason Bateman?? (reportedly in talks; gepostet on Disney Wiki with no source)
Lieutenant Judy Hopps ..... TBA

For reference:
Byron Howard previously (co)directed Tangled and Bolt.
Clark Spencer previously produced Lilo & Stitch, Bolt and Wreck-it Ralph.