Mass Effect 2's final Downloadable Content called "Arrival" will be out on March 29, 2011 for PC, PSN and Xbox live. If you're wondering what the last piece of Mass Effect 2 will bring you, Bioware just released a trailer to give us an idea on what to expect.
This last DLC will pretty much set the stage for Mass Effect 3. Shepard is tasked to find and free a doctor who has evidence of a Reaper Invasion. This trailer gave me the chills and another playthrough of Mass Effect 2 is in order. Enjoy.