If the Killzone trailer at E3 did anything, then it was catch the attention of the crowd, and for better or for worse, that attention has been kept alive even with minimal media support. That in itself is a valuable thing - when this game is going to be released, reviewers will be eager to review it, and gamers will be eager to read the reviews. Lots of people by this time have invested in it, haters and fanboys alike. If Sony and Guerrilla can create a good game out of this that delivers a good portion of its original promise, then the game has a huge and valuable marketing advantage. Conversely, if the game sucks, that can also damage Sony. So there are plenty of reasons for them to try hard. And considering that they probably have been working hard for almost two years now, I'm sure they'll be able to show something interesting at the very least.