I am opening a JIRA for this work to give us a place to track it. Glen took an action in the WSDL 2.0 Working Group Implementors call a few weeks ago to do this but he must be too busy. See http://marc.theaimsgroup.com/?l=axis-dev&m=114252720713194&w=2 for a discussion.
The requirement is to support WSDL 2.0 alongside WSDL 1.1. This means to upgrade the WSDL2Java and Java2WSDL tools and to generate WSDL at runtime (if there is no WSDL deployed with a Web service).
Work is underway already. Chathura is looking at replacing the Axis2 WOM with the Woden Component Model. That would achieve WSDL 2.0 support. For backward support of WSDL 1.1, some new extensions would have to be defined for WSDL 2.0, i.e. the WSDL 2.0 Component Model could be extended to express the features of WSDL 1.1 not supported by the core WSDL 2.0 spec and its adjuncts. I asked Matthew to look into this.
It would greatly help the current W3C WSDL 2.0 Candidate Recommendation advance to the Proposed Recommendation stage if Axis2 could provide an implementation and participate in an interop event within the next few months.