The Spec Ops: The Line single player demo is available for Xbox Live God members to download. It comes in at 1.45 gigs and contains the following based on the description from the Xbox Live Marketplace.
The demo begins with a Delta Force recon team, led by Captain Martin Walker, infiltrating Dubai six months after a cataclysmic sandstorm destroyed the city and left it buried in ruin. Chaos ensues as Delta is pulled into the middle of a civil war. Walker and his team must fight their way through the unpredictable war-torn city to find the man at the heart of its madness – Colonel John Konrad.
The demo will be available for Xbox members May 15th and the full game comes out at the end of June for Xbox 360, PS3, and PC.