Speaking to at this year's GDC, he mentioned how the best was yet to come, "This is just the frosting on the cake.I'm saving the batter for E3. We will absolutely bring the heat."
He also pointed out that Sony own Guerrilla Games, and that they did a "great" job with the first two titles.
"I don't know if you'll see announcements about it, but I can promise you a Killzone 3," he added, after been asked specifically about a Killzone 3 announcement.
So a third instalment for what many see as one of Sony's flagship franchises is definitely on the table, the question is when? Stay tuned.