I've a feeling it's a trilogy.
How good is Dragon Haven? I got it on the cheap from Amazon, and it's the next on my reading list (after my exams. I'm counting down the days until I can just laze about - 16!).
See, I was really looking forward to Dragon Keeper (the Liveship trilogy is the Hobb trilogy I like the least, but this new one is a return to the Realm of the Elderlings) and I found myself bitterly disappointed. I find Hobb's third person books a little dull anyway, but DK was truly abysmal. If Dragon Haven picks up, then I can forgive DK, but if it doesn't, well...
I've heard some good things about DH, but I don't particularly want to get my hopes up.