I dearly love the Harry Dresden books but I think Butcher has outdone himself with this new series. Skyscraper communities that avoid the surface of the planet and trade and war with air ships provide the setting for this intriguing book. As normal with Butcher the relationships and depiction of courage, honor, loyalty and other laudable characteristics are imbued in his characters.
Butcher does a superior job in creating an environment that is uniquely his. The people are the strength of the story but his stage setting provides the glue that makes the plot soar.
References to possible creatures in future books merely whet the appetite for more reading. The sentience and behavior of cats as exhibited by Rowl certainly show Butcher has had plenty of exposure to the egocentric felines. I have mentioned repeatedly that anthropomorphism is one of my favorite subjects. Butcher does a very good job with that. Inklings of sentience in aspects of transportation set up the potential for some interesting future communications.
I highly recommend the book.
web site: http://www.jim-butcher.com/
This book may have been received free of charge from a publisher or a publicist. That will NEVER have a bearing on my recommendations.