Left 4 Dead 2 screenshot from the The Last Stand campaign

[Update]: Left 4 Dead 2's The Last Stand update has now brought in an absolute ton of new content.

After a brief round of teasers, Valve and The Last Stand devs have revealed that the massive Left 4 Dead 2 update will be landing on September 24th. And when I say massive, I really do mean that as The Last Stand is quite impressive for what is essentially a community update!

The Last Stand brings with it a brand new campaign, 26 new survival maps, 4 new scavenge maps, 2 brand new melee weapons, and most importantly of all, the official implementation of CSS weapons! You can also expect to see the Left 4 Dead 1 infected, a variety of previously unused voice lines, a couple of new and improved animations, balance changes and PvP enhancements, and even a whole assortment of bug and exploit fixes. Like I said, this is a big one!

To make things even better, Valve will be also be launching an extended free weekend in order to give everyone a chance to try out the new content. So whether you're a veteran or a brand new player, I'd say September 24th is well worth marking on your calendar!

Once the update goes live I'll make sure to let you know, but until then I'll leave you with the recently posted trailer. Enjoy!