It was Naughty Dog's Evan Wells that disclosed the, obvious, but still reassuring words to fans.
[quote]
"We've been so busy on Uncharted 2 that we've done a very poor job of planning for the future right now. Certainly, there will be another Uncharted. We have lots of ideas of new adventures for Drake."</blockquote>

Perhaps time to give up hopeĀ  Jak & Daxter fans. But hey, you never know.