My signature series is actually getting two new books, as well as my DSL book, there is a probably more important book on Continuous Delivery. The book is written by two long-time friends and colleagues and talks about how to use deployment pipelines to get you that last mile from Continuous Integration to deployment

As well as the book I'll be doing some tutorials on Continuous Delivery with Jez Humble over the next few months. Our first one is at Agile 2010.