This Wiki page is edited by participants of the HTML Accessibility Task Force. It does not necessarily represent consensus and it may have incorrect information or information that is not supported by other Task Force participants, WAI, or W3C. It may also have some very useful information.
From HTML accessibility task force Wiki
HTML5 is not the end of the road for our work. HTML5.1 gives us an opportunity to improve existing features and implementations, follow-up on features that were dropped due to lack of implementation and develop entirely new accessibility features.