I was browsing the Apache Axis Wiki and came across this page which is a list of links to Web Service specifications.
Apache Wiki: WebServicesSpecifications
Very similar to the one I posted a couple of weeks ago, just a bit easier to read.
Also, there is a link at the bottom of that page to a WS Specifications timeline which is really quite nice.
Web Services Timeline
While browsing around I also came across this article Constructing Reliable Web Services on the IBM site. This is most interesting as they talk about the WS-Reliability specification, which seems strange as IBM back the WS-ReliableMessaging specification along with Microsoft.