I know I am very late, but anyway...

Why are people moaning!!! Naughty Dog is busy with Uncharted 2, and this means that proper Jak 4 can be announced at the end of the game. The big question is what happened in the development of this game. The Lost Frontier was patented in 2006, so ND were clearly working on it ages ago, but passed it over to High Impact Entertainment, who have been doing a good job with Ratchet & Clank games {it was formed by ex-Insomniac employees} and decided to concentrate on Uncharted 2 for now, but are helping with it.

So in summary, this is great news, one of my favourite series is coming back, and I think the chances of the franchise returning, but remaining on PS2 is low, I think we are going to see an ND made console version in the near future. Anyway, it will be a fantastic game, and will likely pave the way for the full sequel

^ yep my feelings