It looks like DHH was able to influence Dave Thomas into releasing a Beta version of Agile Web Development with Rails. I purchased the PDF+book edition to show my support and, frankly, I am not disappointed. Though there are some layout and typographical issues, the content is great. I feel like I’m finally getting up to speed on Rails. I’m currently up to Chapter 5, where the book dives into the development of an e-commerce web-app. I’ll post a review once I finish the book. But, as of right now, I recommend that anyone interested in developing web-apps with Rails definitely pick-up a copy.