Dembia works with film and television clients such as Miramax and Walden Media
"Braveheart" scribe Randall Wallace will direct the film, about the first conscientious objector to win the Medal of Honor, for Walden Media
Veteran Fox executive will oversee branding and marketing
The '300' star is joining the cast of Curtis Hanson's upcoming biopic about surfer Jay Moriarty
"Voyage of the Dawn Treader" courts churchgoers to reignite the stalled franchise
Titled "The Mysterious Island," New Line's sequel has been refashioned to focus on Josh Hutcherson's character
New installment in "The Chronicles of Narnia" saga hits theaters Dec. 10
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The studio is also ready for another 'Journey to the Center of the Earth," with or without star Brendan Fraser
Shawn Levy, Walden Media partner on live-action/animated film.
Disney said Tuesday it will not co-produce and co-finance the next "Narnia" installment with producer Walden Media.