I'm writing a book. As you can hopefully see from the image above, it's called Intuitive Mobile UX: Six Dimensions of App Design.
It's not finished (yet) but that doesn't mean you can't buy it now. As part of the Manning Early Access Program (MEAP) you can get access to the chapters as they're written. This is good if you're really keen to read it as soon as possible. It also means you get a chance to provide feedback on what I'm writing. Let me know if you think I've missed anything important or got something wrong.
Or you could just buy it now and wait for it to be finished and then you'll get the finished product.
Get it from https://www.manning.com/books/intuitive-mobile-ux and use promo code 39lacey for 39% off.