According to People magazine, a source tells the magazine the Jolie-Pitt clan will be in France for a "a stay of long duration." 

Also according to local sources, they're staying at Microsoft co-founder Paul Allen's historic Villa Maryland.  This is the same villa the couple previously borrowed for a one-week stay during their 2006 French break preceding the birth of daughter Shiloh.

Pitt and Jolie are expected to remain in St. Jean Cap Ferrat through the Cannes Film Festival, May 14-25. Pregnancy permitting, Jolie is scheduled to walk the red carpet for two films, Kung Fu Panda on May 15 and Clint Eastwood's The Changeling on May 20.