The magazine states that Guerilla's first person shooter is deep into its development stage and will be released next year, 2010. Considering Killzone 2 hasn't even been out for a year yet, and it took over 5 years to develop, it seems a little surprising that a sequel will be launched so quickly.
The game engine is already there though and has proved itself as a real heavyweight on PS3, as are some solid foundations for the continuation of a brilliant multiplayer component. All that's really missing is a new storyline and some new locations. If Killzone 3 does get a release next year, we'd expect it to launch with many of same features that have earned it such a glowing reputation this year. That's good though, right? The more Killzone the better as far as we're concerned, even if it is more of the same.