Review copies of Killzone 2 are already being distrubuted. Game is getting very close to gold, there's probably still some polish that has to be done but the game is pretty much done for reviewers to look at ahead of time for their publication dates. Can't wait for this game.
http://www.gametrailers.com/player/42076.html
http://www.gametrailers.com/player/38548.html
Even in its early builds the game looks better than anything out currently on either console, the graphics from the video clips above being all ingame. As NDA agreements expired last month and reviewers were allowed to begin talking about the game it is receiving a ton of praise for accomplishing what it has in the graphics department and having some great gameplay to boot. Multiplayer is enhanced with a clan and points systems that attach more replay value, as well as a deep class based multiplayer system.
This game isn't going to be a Halo killer or COD4 killer, but it will probably be the best console shooter available on the market.