Aliens: Colonial Marines "Bug Hunt" DLC Revealed?

The Official Xbox Magazine notes a photo on The Gearbox Software Forums of a Wal-Mart ad promoting new Bug Hunt DLC for Aliens: Colonial Marines, calling this a "$14.99 value," though not indicating what, if anything this will actually cost. It says this is due via download on March 19th, and offers the following description: "Team up with your friends to take on waves of increasingly difficult enemies in an all new game mode." Thanks VG247.