Left 4 Dead is probably going to get a lot of coverage the closer it gets to its November 4 release date, so you might want to settle in for the long haul. In addition to the media blitz and release date announcement comes a couple of hands-on previews from 1UP and Kotaku.
From 1UP:
The new feature we saw this time around is the overall art polish. The HUD seems the same, but notifications (such as friendly fire warnings and revivals) are now more prominent. Visual effects such as film grain, shifts in color palette, and blood spatter have been added to give more of that "relentless zombie movie" vibe to the game. The combination of blur filters plus the black-and-white tint when you're knocked down (your health has been drained, and you're down on the ground, pistols blazing, until another player rescues you) adds a nice measure of visceral impact.
From Kotaku:You can read more of their impressions at either 1UP.com or Kotaku. Left 4 Dead is slated to be released on the PC and Xbox 360 platforms on November 4, 2008.
Aim will definitely be rewarded elsewhere in the form of not killing your teammates, something I may have been guilty of at one point. Fortunately, helpful icons pop up with important info like "Don't shoot your teammates!" and "Heal your friend!", an ever present reminder that there is no "I" in "team", but that there are two in "Friendly fire."