Google launched a new website for Accessibility at Google to pull all existing resources together in one place. Here you can follow the latest accessibility updates from Google blogs, find resources from help center, participate in a discussion group or send your feedback and feature requests. "At Google, we often like to say, "launch early and iterate" — meaning, get something out the door, get feedback and then improve it. In that tradition, our accessibility website is pretty simple and we expect this site to be the first of many iterations. We're excited about the possibilities," Google blog.
More info: Accessibility at Google