Along with the new release date, Disney shared concept art from the film, which will tell the story of a Polynesian princess who "sets sail in search of a fabled island."
Here's the plot synopsis (via IGN):
In the ancient South Pacific world of Oceania, Moana, a born navigator, sets sail in search of a fabled island. During her incredible journey, she teams up with her hero, the legendary demi-god Maui, to traverse the open ocean on an action-packed voyage, encountering enormous sea creatures, breathtaking underworlds and ancient folklore.
Moana will be directed by Disney hit-makers Ron Clements and John Musker.
"John and I have partnered on so many films -- from The Little Mermaid to Aladdin to The Princess and the Frog," Clements said in a statement. "Creating Moana is one of the great thrills of our career. It's a big adventure set in this beautiful world of Oceania."