I just finished it. I blasted through it in a very short time by my standards. I'm terrible at reviews, but suffice it to say, I really enjoyed this book. I liked how it tied up a lot of loose ends, and I liked how Kathryn was brought back. I was never one of the people who was adament she come back; I just hoped that when it inevitably did happen, that she was brought back with care and for a reason. IMO, Kirsten achieved this.
It was too bad that we lost so many ships, but as far as i'm concerned, it just gives Kirsten a chance to bring other new ships and new characters into the narrative. With all the challenges in the AQ/BQ, it probably means we'll only get one at a time. Hopefully the Achilles will be on its way back as well..
I can't wait for the next one, and hope we continue to get at least one of these stories every year if possible.