It's a popular rumor and it's currently gaining a full head of steam online. For all you Killzone 2 enthusiasts out there, the possibility is well worth discussing.
It apparently began when European gaming site 4News posted an article about KZ2 DLC "assumptions," and they cite several sources in positing a few interesting theories. Firstly, based on a pic with a jeep, they'd like to think that vehicles will soon become playable in the game, although we do have to remind everyone that there is a vehicle you use in KZ2; it's towards the end of the game and it's totally kick-ass. But more may be on the way, and that's good news. Secondly, besides the obvious possibility of seeing more multiplayer maps and weapons, it may be conceivable that Guerilla is ready to give us co-op gameplay. Now, we really have no idea what the first batch of downloadable content will yield, and nothing here is official. But if you read the article closely, there are some viable sources listed amongst the speculation, and we're hoping that Guerilla will really wow us all when they announce the DLC details. But regardless of whether or not we receive all this great stuff, we can assure you that DLC is most certainly on the way. You don't really think that one of the most anticipated, critically acclaimed and immensely popular titles in the PS3's short history will go without, do you?
Anyway, whenever they decide to issue some official details concerning the DLC, we'll fill you in. We suggest crossing your fingers, though.
Related Game(s): Killzone 2