Mark your calendars ...

Marvel Studio, reveling in the success this weekend of "Iron Man," said Monday it it will release "Iron Man 2" on April 30, 2010. Also in the pipeline: "Thor," due out June 4, 2010; "The First Avenger: Captain America," May 6, 2011; "The Avengers," July 2011; and "Ant-Man," which remains in development.

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