As you may know, I am editing a series of books for Addison-Wesley, my long-time publisher. Authors in the series are all going to be sharing early drafts of chapters and soliciting feedback. Two authors are far enough along that they have made initial chapters available. Roman Pichler is writing about the product owner role in his book, Agile Product Management: Turning Ideas into Winning Products with Scrum. Two of his chapters are available now. Clinton Keith is writing Agile Game Development with Scrum, which builds on his experience as a game studio CTO and fifteen years in the industry. He has one draft chapter available. Already available is Agile Testing: A Practical Guide for Testers and Agile Teams by Lisa Crispin and Janet Gregory. I strongly encourage checking out each of these books.