EW has a bit more on Portman's next film on their site:

Natalie Portman, Penelope Cruz will star in WWII drama. The ''Star Wars'' princess will play a photojournalist who falls in love during the war and befriends a Gypsy played by Cruz by Gary Susman

Natalie Portman can't seem to get away from the combat zone. First the ''Star Wars'' movies, then the Civil War drama ''Cold Mountain,'' and now, ''Head in the Clouds,'' a movie set in Paris in the years surrounding World War II. According to the Hollywood Reporter, she and Penelope Cruz will shoot the drama in December in Paris, then move to Montreal for more shooting, through February.

Thanks to gsc for the find!