Since last year, we’ve made a number of accessibility fixes in Google Calendar, including improved focus handling, keyboard access, and navigation. In Google Drive, we incorporated Optical Character Recognition technology to allow screen readers to read text in scanned PDFs and images, and we added NVDA support for screen readers. New accessibility features in mobile apps (Gmail for Mobile and Google Drive on iOS and Android) included enhanced explore-by-touch capabilities and keyboard/trackpad navigability. For a full list of new features and improvements for accessibility in our products, check out our post today on accessible@googlegroups.com.
via Greater accessibility for Google Apps | Official Google Blog.