How to play Modern Warfare 3 PC beta on Steam and Battle.net?

The Call of Duty Modern Warfare 3 (MW3) will be going into the second beta phase on October 12, allowing players on all supported platforms to experience the upcoming game.

MW3 Beta for steam---it doesn't show a code on the site, still has to be sent out maybe ? : r/ModernWarfareIII

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Comunidade Steam :: Guia :: Run Games from Battlenet Launcher with Steam Overlay