From ComingSoon:

ComingSoon.net has learned that Oscar winner Roman Polanski (The Pianist) is in talks with Orlando Bloom ("Pirates of the Caribbean" and "The Lord of the Rings" trilogies) and Scarlett Johansson (The Prestige) to star in his historical tentpole Pompeii.

Based on the New York Times best-selling novel by Robert Harris (author of "Archangel" and "Fatherland"), Pompeii tells the story of the eruption of Mt. Vesuvius in A.D. 79 through the eyes of a young engineer, Marcus Attilius Primus, who is sent to repair the greatest aqueduct in the Roman Empire, which brings water to 250,000 people on the Bay of Naples. Attilius not only has to fight the corrupt forces that control the town of Pompeii, but ultimately the overwhelming power of nature itself.

The film has a projected August start with plans for a five month shoot. Polanski co-wrote the script with Harris.