After years of implementation and refinement, the practice of developing software the agile way merits an updated look---this book is it;

Revision of a classic on agile. Includes 35% more coverage including interviews with practitioners who have made agile work for their organizations.
First edition sold over 15,000 copies and Alistair has become a major name in agile.
Agile is on the rise! It has extended into other areas outside of programming including embedded systems, database management and even game development.