I was pleased to see the W3C announced the first working drafts of the roadmap and specifications addressing the accessibility of Rich Internet Applications. This was work I had initiated over 2 years ago in the W3C and it is nice to see that accessibility through open standards works. Although I initiated, and helped lead this, the end result is certainly a team effort by the W3C.
What is important about this announcement is that it also address the accessibility and usability of the Web by persons with disabilities by closing the usability gap between the web and rich graphical user interfaces much the same way that the new Web Content Accessibility Guidelines are meant to address the accessibility of all types of content which may be delivered over the Web.
As the article states, this work provides the tools the author needs to make these types of applications accessible and usable. This, in fact, addresses accessibility reform on the Web by allowing the author to add semantics to the web page to facilitate platform accessibility infrastructure support of your web application by the browser. It will also allow us to consider new web accessibiltiy test tools that are capable of handling both GUI and Web-based applications.
What is clear is the W3C has made leading a quantum leap into area that brings the usability of the web experience, for all users, in line with rich GUI applications without the overhead of supporting multiple operating systems.