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Microsoft unveils Xbox One with Spielberg, Activision tie-up

Reuters By Bill Rigby and Malathi Nayak REDMOND, Washington (Reuters) - Microsoft Corp unveiled the "Xbox One" on Tuesday, its first new gaming console in eight years, and its strongest push so far to dominate consumers' living rooms with an array of exclusive media content. The Xbox One took four years to develop and will be the launchpad for a "Halo" live-action video series produced by Steven S…