Amazon.com just posted my five star review of Hacking Exposed: Wireless, 2nd Ed by Johnny Cache, Joshua Wright and Vincent Liu. From the review:
I reviewed the first edition of Hacking Exposed: Wireless (HEW) in May 2007, and offered four stars. Three years later I can confidently say that Hacking Exposed: Wireless, 2nd Ed (HEW2) is a solid five star book. After reading my 2007 review, I believe the authors took my suggestions seriously, and those of other reviewers, and produced HEW2, the best book on wireless security available. If you want to understand wireless -- and not just 802.11, but also Bluetooth, ZigBee, and DECT -- HEW2 is the book for you.
I forgot to mention in my review that this new edition appears to be a substantial rewrite, not a minor editing of old chapters! I didn't do a chapter-by-chapter comparison. I did read the whole book, which the publisher provided as a review copy.