New multiplayer-focused Earth add-on content heading to spacebound role-playing game on July 17; Kinect PlayFit calorie tracker now available.

BioWare is continuing to add to March's well-received space role-playing game Mass Effect 3. Microsoft's director of Xbox Live programming Larry "Major Nelson" Hryb announced today on his blog that a free Mass Effect 3 multiplayer expansion titled Earth will arrive on Xbox Live on July 17.

BioWare has more Mass Effect 3 DLC in the pipeline.

No further information is available surrounding the content, but previous multiplayer expansions for Mass Effect 3--Resurgence and Rebellion--launched on all platforms, and added new maps, weapons, and characters.

Launching today on Xbox Live in the United States is Kinect PlayFit, a free download that was the subject of a rumor in May. The application aggregates and tracks the calories gamers burn as they play a range of games, including Dance Central 2 and Kinect Star Wars. Kinect PlayFit allows users to view personal statistics over time and track progress on leaderboards. The app launches in other regions later this week.

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