In reply to Tammie Lister.

mfs to answer your comment, the accessibility team has been advising in issues within the GitHub repo, in Slack both in #core-editor and the accessibility channel. Along with this at various WordCamps there have been cross table teams. This combination has ensured a lot of education has happened.

Documentation wise the accessibility team have been incredible writing handbooks and continue to write amazing documentation we can all learn from: https://make.wordpress.org/accessibility/handbook/