Valve has released some new artwork, including a movie-style poster, concept art for the Smoker and Boomer, and I'll post some screenshots released yesterday as well.  Click the images to see them full-size.

Full size Smoker pic
Full size Boomer pic

Screenshots

Personally I love the poster...Valve is supposed to advertise this game more than any of their previous games by far, and the style they've chosen is great.

Nobody?

If the zombies had any intelligence, they would not mess with that black man's radio.

Anyways, the shots look good. The "boomers" make me queasy.

Do want.

Unfortunately, I have no means of playing this game .

Too busy oogling the zombie in her underwear...No!  I mean, er, Left4Dead will be huge!

Zombie got back.

Cann'e wait for this.

I'd tap it with an M4?

Alright, I don't know nearly enough about this game (but if I had the right system/computer, it would be a day one purchase). I assume it's only those 4 people you can play as? Not that it's a big issue though, the game looks awesome. Purely awesome.

Yes those are the 4 survivors. You play the campaign mode as one of them along with 3 friends (or AI friends...) against the AI zombies, including some "super zombies."

The versus mode is the 4 survivors vs. the same zombies, only the super zombies are player controlled, up to 4. It's harder for the survivors to win this mode...this mode is more of a competitive thing obviously...see how far the survivors can get.

I'm guessing a lot of people will be playing the campaign mode for a lot of the time...and it shouldn't get old no matter how many times you play a map...every time is different and each of the 4 characters has over 1000 lines of recorded dialogue.

Loving the poster, thats an awesome approach to advertising. Now I just have to resist the urge to purchase this game on day one, there are simply far too many games coming out in the next few months.