So the DLC is for all platforms, and the 360 is getting dedicated servers as well? That's good news. I just got a 360 and my parents bought a 32 in HDTV, so I'm considering buying this game for that, even though fps are better played on PC.
Well keep in mind Valve said they were FORCED to charge for DLC for TF2 when PC owners got it for free...I would highly recommend getting L4D for the PC as the controls are vastly superior, save that HDTV for Fighting, Platformer, driving, and xbox exclusive games like GoW2.