We revealed the book at our third annual tutorial conference, RWDevCon 2017, and the book is now available on the raywenderlich.com store! To celebrate the book launch, we’ll release some free chapters on the site this week — and you can also grab a great discount on the book in our store. Read on to see what the book is all about! What is RxSwift? Rx is one of the hottest topics in mobile app dev
![Introducing RxSwift: Reactive Programming with Swift!](https://cdn-ak-scissors.b.st-hatena.com/image/square/b9827b3042820687a8d675c3f1006e9e8203df35/height=288;version=1;width=512/https%3A%2F%2Fkoenig-media.raywenderlich.com%2Fuploads%2F2017%2F04%2FrxSwift-twitter.png)