I am currently working on a book called "The Windows 10 Productivity Guide". It will feature not just new features in Windows as an OS but also strategies and highlights to help you get most out of this OS overall. I am working with the official Microsoft Windows 10 Help Site, some well-established tech blogs, and also my own personal and professional experiences with Windows 10 as the knowledge-base supporting the content of the book.
Will keep you posted and will eventually let you know when the book is ready for the marketplace.
Cheers and Happy New Year 2016.