Yes, there is/will be a chapter on testing web services. It's actually much easier than testing web interfaces, as it is much more focused on expected outcomes for given inputs. Personally I use the same tools as for other BDD testing: in Java I would use JBehave/Thucydides for the living documentation, and Jersey to talk to the web services. Of course it depends on your platform: in .NET you might use SpecFlow and your favourite .NET web service client library.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com