The Children of the Sky

I'm somewhat torn on this, I enjoyed the book but the author seems to be doing a lot of foreshadowing that does not have a payoff. (I apologize for being vague, I'm trying not to give away spoilers).

I'm not sure if he's going to do another book or not, if he does and it explores some of these threads (and some of the ones in A Deepness in the Sky), it could raise my rating for the entire series. If not, and this is the end, then it's good but a little disappointing at the same time.