I was under impression that "*" in "WS-*" stands as a wildcard for all the standards included in WS specs.
According to Roger Sessions Microsoft and IBM are referring to WS-* as WS-STAR, where STAR is an acronym for Secure, Transacted, Asynchronous Reliable messaging. Huh!

Well, anyway... Subscribe and expect more technical blogs on WS-* in months to come.