http://www.masteringdrupal.com/articles/Angela-Byron-interview

Previous Drupal books have dealt with core, either from a super beginner standpoint or from a super developer standpoint. Practical Drupal will be aiming at the middle segment: people who already somewhat familiar with Drupal (though there’s the token chapter for those who aren’t) and want to know how to extend it with the rich library of contributed modules. It’s a hands-on recipe-driven book, showcasing various contributed modules in each chapter like CCK, Views, and Organic Groups, and how to combine them together in order to solve “real world” problems.

Almost all of the Lullabot team is co-authoring the book: Nate Haug, Addison Berry, James Walker, Jeff Robbins, Jeff Eaton, and myself, along with Robert Douglass and Matt Westgate acting as technical authors. We each have expertise in different parts of Drupal and the goal is to combine that collective experience together in one place.