Before it gets too depressing, head over to N-Europe for some new MP3 screenshots. Be sure to look at them again after the next section.
No online multiplayer.
So much for a Halo-Killer. We sure as hell know that Killzone isn't capable. It sounds like the single-player game received all the developer attention, so they didn't want to spill any resources into an online mode. Hopefully there is still local multiplayer.