Thomas Erl has posted a draft of his forthcoming book and is looking for reviewers.
Thomas Erl has already published three books on SOA. I'm currently reading the latest, SOA: Principles of Service Design.
He's working on a new book, SOA Design Patterns. The site has the current material and a form for providing feedback. If you're interested in SOA and patterns, check it out.
SOA Patterns Book Draft