Speaking with Animation Magazine, Brenda Chapman let it slip that Gary Rydstrom, veteran sound designer at Skywalker Sound and director of two Pixar shorts (and one cancelled feature) is directing an animated feature for Disney-owned Lucasfilm.
The unannounced picture—likely the one we heard about in 2010—is the one Chapman was consulting on after leaving Pixar following her removal as sole director of Brave. Naturally, there's no word on story or casting yet.
As an aside, Chapman is now at DreamWorks Animation, where she's developing a film that is "very different than Brave, but yet has a strong female protagonist." She continues to burn her bridges to Pixar, telling the magazine, "I have no desire to go back there. The atmosphere and the leadership doesn’t fit well with me."
You can read the entire interview with Chapman here.