Percy Jackson: Sea of Monsters will open on Wednesday, March 27, 2013.

Percy Jackson, the son of Poseidon, continues his epic journey to fulfill his destiny, as he teams with his demigod friends to retrieve the Golden Fleece, which has the power to save their home and training ground, Camp Half-Blood.
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According to a source familiar with the production who asked not to be identified because of the sensitive nature of discussions, studio Fox 2000 has exercised the option on star Logan Lerman, essentially meaning that the young actor is locked down to reprise his role as Percy Jackson in a new picture. The company has also hired a director in Thor Freudenthal, best known for helming the similarly boy-oriented "Diary of a Wimpy Kid;" he'll pick up where "Lightning Thief" director Chris Columbus left off. (Columbus will only produce this new movie.)

read the full article here [link] (latimesblogs.latimes.com)