Thats right, there is a new guide out there to help all those interested in Maven (or already using it) to get the most out of their build lifecycle. It is indeed the definitive guide and will be regularly updated so it stays that way. This book is produced by my colleges at Sonatype and is a free gift to the Maven community – no registration, no catches. From the front of our site:

Maven: The Definitive Guide

We have produced a free Maven guide for users that is updated and released on a weekly basis.

We are working with the founder of the Maven project, and core Maven committers to produce an unrivaled technical resource for Maven users.