Amazon France is good at giving us early information. Or maybe they're just good and putting stuff up before official announcements.
As you can see by this new listing , it seems we'll be getting a Killzone trilogy some time soon. It's apparently slated to release in late October.
We don't know which titles will be included, but we assume it's probably the first three entries, including the first on the PS2 (possibly touched up for high-definition). But they might bypass that one and give us the PSP iteration, Killzone: Liberation . That might actually be better, as there aren't that many fans of the original title, which only had a lukewarm reception; on the flip side, the PSP game turned out pretty well, as most will tell you.
Trilogies aren't really anything new this generation. They're great for those who just want to catch up or those who are huge fans of the series in question. Besides, you can usually get three games for a great price.