Their last release, 'Valiant' was released by Walt Disney Pictures:

April 12, 2006

Fox to release Vanguard's 'Chimps' toon

Vanguard Animation's computer-animated cartoon "Space Chimps" will be distributed through 20th Century Fox as a part of IDT Entertainment's four picture, two-year deal with the studio. "Chimps" is written by Kirk DeMicco and is being directed by Norton Virgien ("The Rugrats Movie") and Donovan Cook ("Mickey, Donald, Goofy: The Three Musketeers") and is scheduled for release in May 2008. (Staff report)
http://www.hollywoodreporter.com/thr..._id=1002315611