Rock Band recently expanded it's downloadable library to over 1000 songs, and they can now add SLIPKNOT to that ginormous library. Next week, a new Slipknot pack "Psychosocial", "Duality" and "Sulfur". The tracks come out December 8 on Xbox 360 and Wii and December 10 on Playstation 3. It's pretty interesting that they went with newer songs and not something off their first album.
