Videos and Trailers

"Left 4 Dead 2 Trailer - E3 '09" Video
This is the first teaser revealed for Left 4 Dead 2, it features the new Survivors of the game, some new upgraded Infected and the new Special Infected called The Charger, along with the new Close Combat weapons. The video was uploaded on 1st June 2009 as Valve announced Left 4 Dead on their website. 550px

"Left 4 Dead 2 Trailer - E3 09" Video Transcript
[Music starts to play in the background as the place the game set at reveals]

Coach: "Last time I saw my grandmother, she asked me if I was still a pray man. I told her: "Yes Ma'am." "Well, she said "Pray harder.""

[Three F/A-18C Hornets planes flying over the city]

Coach: ""'Cause it ain't working!""

[Explosion starts, the Infected have been alerted and starts to charge the Survivors.]

Coach: "Heh, I ain't going to die waiting on salvation. As long as we still got guns, we're gonna fight. "

[The Infected are being shot, The Charger starts to attack the Survivors and suddenly Coach runs out of Pistol bullets.]

Coach: "And if we run out of bullets..."

[Coach carries a Chainsaw, Ellis holds a Axe, Nick holds a Frying Pan, and Rochelle holds a Baseball Bat as a horde approaches]

Coach: "Baby, they gonna wish we hadn't!"

Trivia

 * Strangely enough, it is clearly seen that the Survivor at 0:48 is wielding a pistol, and the pistol runs out of ammo. By normal in-game standards, this is impossible.
 * It could be that pistols in Left 4 Dead 2 does not have unlimited ammo no longer as Close Combat weapons took it's usefulness when ammo runs out.
 * The sound of the Baseball Bat is taken from another game of Valve, Team Fortress 2.
 * As seen by the banner in the opening scenes of the teaser, the infection seems to have hit during the "Louisiana Fall Festiva".
 * Zombies seem to be able to have missing limbs as seen in the trailer, whereas in Left 4 Dead, they die when their limbs are blown off. This could mean that the virus has begun to strengthen its victims to a degree.
 * One can see what appears to be the Army bombing the infected, and that these are breaking through fenced barriers, implying Valve's statement that New Orleans had been until now relatively safe from the infection.
 * If you watch in the beginning, you can see three F/A-18C Hornets flying over. This indicates that the military may make an active appearance for once in some way.
 * The infected seem to be smarter and more aware of their surroundings as they seem to take notice to the jets and appear to be running from the explosions.
 * A zombie, possibly being shot, has similar clothes(Pink jacket) and hair (black, pony tail) of that of Zoey's. This has spread rumors that Zoey and possibly other Survivors will appear someway in left 4 dead 2 such as an easter egg or unlockable costume. This is known to also possibly give a slight hint that Left 4 Dead levels will appear also.
 * The game itself is more gore and bloody than his big brother Left 4 Dead. Infected have acutally lot of blood coming out of their mouths.