The Game with Fame promotion that runs on Xbox Live, the one where normies get to frag celebs, has mentioned the date September 23rd and Left 4 Dead's upcoming DLC.
It says to make sure gamers send their invites out ready for the 23rd if you "want a chance to play" the new Crash Course DLC. It says 'chance' which could just mean a preview...
Frankly it's a little unclear. Valve have said previously that Left 4 Dead would be receiving its new campaign before September ends, and the 23rd *is* before said end.
"If you're an Xbox LIVE Gold Member (if not, upgrade now!), and you want a chance to play the new Crash Course add-on for Left 4 Dead, send a friend request to the following Gamertag and be online half an hour before (5:30 P.M. Central Time) the Game with Fame session starts on Wednesday, September 23, at 6:00 P.M. CT," Game with Fame.
Who are the next famous types ready to take on Xbox Live gamers? It's that rock-band Paramore, from a place called Franklin, Tennessee. Have you gamed with fame before?