Amazon.com give us new details for Mass Effect 2. We give you details below :

-The second act of BioWare's epic sci-fi trilogy continues the story of Commander Shepard and humanity's first steps onto the galactic stage
-Success - or failure - depends heavily on the crew you assemble and their loyalty to you and the mission
-Stunning graphics and a refined dialog system will draw you into the story like never before
-Numerous improvements to the intense, third-person shooter combat
-Deep character customization options let you create your own vision of Commander Shepard

The game will release for beginning of 2010 for PC and Xbox 360...