Welcome to the Designing Evolvable Web APIs with ASP.NET book, authored by
The book is finally done and was published in March 2014.
The source code is available from https://github.com/webapibook.
We've also created a discussion group were we would love to hear you thoughts on the book, answer any questions and also discuss your experiences applying the techniques we have laid out within.
The book is also available at O'Reilly Atlas.
For updates, follow us at @webapibook