Steam News announces a new automatic patch for Left 4 Dead 2 adding the new community mutation Death's Door to the zombie shooter. The Left 4 Dead Blog explains what this does: "This Co-op Mutation from Rayman1103 features death, death at a moment’s notice. No sitting around waiting to die. No wondering if your friends will save you. Nothing. You go down, you’re dead. So stick close to your friends and make sure to watch out for friendly fire."