There has been some discussion [1] on WAI-xtech about HTML+ARIA validator/conformance checker
david dorward wrote: The HTML Working Group is chartered to "maintain and produce incremental revisions to the HTML specification"[1], which I would imagine HTML 4.01 + ARIA would fall under. I imagine you would raise the matter with them and see if they would be willing to work with the WAI to publish a small Recommendation which makes reference to ARIA and HTML 4.01, defines a Doctype and includes a DTD. Is this something that the HTML WG would consider? [1] start of thread: http://lists.w3.org/Archives/Public/wai-xtech/2008Sep/0381.html regards stevef