What is the current situation with ARIA and accordion?

Hello all,
I know that in early stages of ARIA there was a proposal for accordion.
Earl Johnson from Sun has written a "complete proposal" for accordion
http://dev.aol.com/dhtml_style_guide#accordion as part of the DHTML
Style Guide,. However, there are no ARIA roles and states that describe
the actual widget in all its incarnations, e.g. single panels, multiple
expanded panels etc. I understand that one of the suggestions is to use
appropriate roles and states for the job, e.g. menus, tab panels,
treeviews etc. However, this may not always be a desirable option,
particularly for distributable components.
What is the plan for accordions going forward?
Should we contribute our own findings and/or proposal for this widget?
 
Thanks,
Victor