For the past year or so I have had the pleasure and honor of working with Thomas Erl on a couple of forthcoming SOA/ESB books (I'll post more details when we get closer -- soon I hope!), that are part of his Prentice Hall Service-Oriented Computing series of books.
Another one of the books in the series that he's currently working on is SOA Design Patterns (to be release in May 2008). I've already contributed a bit, and am working on further contributions. You can help too! There is a public review in progress right now through the end of the Feb, your comments are welcome.
If you're an architect or patterns type (regardless of your technology preferences) check out http://www.soapatterns.org. We want as much community input as possible from you guys and gals in the trenches that are eating/sleeping/breathing SOA so that this becomes the definitive work on SOA Design Patterns.