Left 4 Dead 2
will receive Steam Workshop support starting in the middle of October, according to a recent developer blog
. The system will allow players to rate and install community-created add-ons, including new maps, weapons, items and mutations thanks to an "expanded scripting tool."
Steam Workshop will roll out for PC, Mac and Linux versions of Left 4 Dead 2
next month, though no specific release schedule has been announced yet by Valve.