He doesn't know exactly when the third Killzone game will be announced, but SCEA prez Jack Tretton does know that it's gonna happen. When pushed by GTTV host Geoff Keighley about a sequel to last year's Killzone 2 on last night's episode, the Sony exec openly answered, "You know, we own Guerrilla Studios, and uh, they did a great job on Killzone 1 and 2 ... I don't know when you'll see announcements about it, but I can promise you a Killzone 3." Pretty straightforward, Jack!
Though he didn't make any promises regarding Killzone for E3, he did additionally note that the news from Sony out of GDC was "the icing on the cake," referring to big announcements at E3 this year as "the batter." And if there's one thing we really, really like, Jack, it's cake batter. You've won this round.