Some of the major plot themes from the first book are resolved, while new ones are created and left open. As the middle book of a trilogy, everything couldn't be resolved in this book. It was better than In the Name of the Wind and it was recently voted to be one of the 10 best books of the last decade.
Hmm well I think I'll try and hold off until the 3rd book comes out. Even though I've heard nothing but good things.