It looks like there is a new project starting up on the OpenXMLDeveloper.org community for transforming WordprocessingML into HTML using XSLT. The first article posted here (http://openxmldeveloper.org/articles/333.aspx) starts off just mapping into basic paragraph and text formatting, and it's super simple and straightforward.

I've been told that Sanjay plans to have some future updates to this soon that will start to include other functionality. It would be great to see who else is interested in getting involved here.

-Brian