Ron Eagle replied to someone on the playstation blog by saying:
on May 20, 2008 at 11:27 am
Just wanted to add a quick reply on the "delay" of Killzone 2 to Feb 2009. To be clear, there is nothing wrong or causing a delay to the development of the title. We (SECA) had to look at the fall calendar with SOCOM, LittleBigPlanet, MotorStorm: Pacific Rift, Resistance 2, plus some PSN titles and make a decision where each game should come out. Killzone 2 was moved to Feb 2009 to make sure we didn't have three shooters in the marketplace competing for retail dollars during the same holiday season. The game will be great and it will be out in Feb 2009 in both Europe and North America.
Hope this helps - alot of times we gamers read delay and think something is wrong, in this case, it was a pure management decision.
ron