The acessibility issue is a big concern for developers of MOSS, I have already posted on this subject many times, but today I came across a post from thekid that SPWorks have released the Alternative Rendering Framework for Sharepoint. The objective is to provide a framework that consists on a feature that controls the render of the XML and XSLT of the controls used.
“ARF is a feature you can activate on your site collection, adding a list, a document library and column. All of these are there to support some of the functionality of ARF”
You can find more information here.