We want to try maven2 for the spring projects, and spring-ws is going to be the first to try it. This should make it easier for people to get correct poms, which is a popular request.
As part of the migration, we will probably further modularize the projects. For instance, we will split spring-oxm into spring-jaxb1, spring-jaxb2, spring-castor-xml, spring-jibx, etc. The benefit of this is that you only download the dependencies you need.