Developer Guerrilla announced Killzone Trilogy this morning, including a full HD remaster of the original PS2 shooter, complete with Trophy support. As well as all three games, all the DLC map packs for the PS3 sequels will be included.
So far only the European release has been detailed, priced as it is at €49.99/£40.84. Current release window is "soon."
Guerrilla has also confirmed that Killzone HD will be available directly as a download, so if you have the PS3 ones already you can guy that on its own. Great news!