Now that it's been announced by Manning, I think I can talk a little more about the project that's been taking up most of my spare time!
Zend Framework in Action is a collaboration between myself and Nick Lo. We are still writing, but Chapter 1 is available for you to download and see where we are heading with the book. Manning has an early access program where you can get access to pre-production PDFs of each chapter if you can't wait. As a bonus for signing up early, you get to tell us what's wrong (and what's right!) before the prose is committed to the printed page so we can fix it and you'll get a better final book.
In order to set expectations, I should probably point out that Zend Framework in Action is a tutorial book intended to show how to use the components of the framework together within "real world" projects. Each component is dealt with in a "what is it?", "why use it?", "how do you use it?", "let's use it in the real world" manner. It's not an advanced exposition of each component as that would take many books!
So far, I've learnt that writing a book is considerably different (and much harder!) than writing a tutorial. Having help from the excellent people at Manning has eased the transition from writing when I feel like it to sitting down and writing daily. I still need to work out how to write good quality prose at a decent pace though!