Moana? that's also slated for a 2016 release.
Honestly, after the news came out that Big Hero 6 was the "latest" world chosen, I'm fairly positive that Zootopia and Moana cannot make it as in-built worlds.
As far as Zootopia goes as a movie, the director of Wreck-It Ralph is directing the movie.
It's going to be a hidden gem... people just don't know that yet