The American Foundation for the Blind filed a request to the Library of Congress to clarify that working around this lockout wasn't a violation of the DMCA. That request was granted this week.
This doesn't mean we are going to rush out and start cracking eBooks for blind people. I think it means that the social right to access books has been recognized and publishers are going to feel much more comfortable turning on disability access in their books, and working with organizations like Benetech to expand access.
Feds grant DMCA exceptions | CNET News.com
U.S. Copyright Office, Anticircumvention Rulemaking