I'm incredibly excited to announce that I've joined Xamarin! When I wrote my book, I remarked to a few friends at the time that it was basically a love letter to C#; a language that is powerful, expressive, and concise all at the same time. Working with the folks who are responsible for bringing C# to just about every platform makes me happy, as does the fact that Xamarin's focus has been primarily to make cross-platform mobile development a reality.