I have a feeling you might need to contact your account rep and let them know you want this. Today the support is limited to very few dist/versions. I know at one time a little ways back they where looking to see if any other interest existed. I think the issue is VMware needs to do full QA to certify on a different distribution, and that is something I bet they don't want to do without lots of interest.
All that said - from what I can tell no new version/dist have been announces as coming soon (but who knows VMware does not make all those details public until release times)