Yes, I think so. I mean, I think DRM causes some issues. There are different ways that could be worked around. Amazon could remove the DRM and provide the DRM file to an organization that then produces Braille and audio in an accessible e-text, or they could build in accessibility the way Apple has, for example. In the iBookstore, you can turn on voice-over on your iPad, and purchase books in the iBookstore and read them.
On February 27th, 2012. See this statement in context.