Just reported by wrox on Twitter with a link to the actual US Copyright Statement of the Librarian here:
http://www.copyright.gov/1201/2010/L...Statement.html
Initial Statement: "This is the fourth time that I have made such a determination. Today I have designated six classes of works. Persons who circumvent access controls in order to engage in noninfringing uses of works in these six classes will not be subject to the statutory prohibition against circumvention."
here is the relevent para
(6) Literary works distributed in ebook format when all existing ebook editions of the work (including digital text editions made available by authorized entities) contain access controls that prevent the enabling either of the book’s read-aloud function or of screen readers that render the text into a specialized format.