Two new draft chapters of my upcoming book "Agile Product Management. Turning Ideas into Winning Products with Scrum" are now available for download and review at http://www.mikecohnsignatureseries.com/books/agile-product-management.
Chapter 6, "The Product Vision," talks about the importance and desirable qualities of a product vision in Scrum. It also suggests a range of helpful techniques to create powerful visions. Chapter 7, "The Product Backlog," provides an in-depth guide to the product backlog from stocking and grooming the product backlog to working with non-functional requirements and multiple teams. Both chapters touch upon the user experience subject albeit not in great detail.
I look forward to your feedback and comments.