PaidContent reports that the Kindle Mobile Learning Initiative that Secretary of State Hillary Clinton and Amazon's Jeff Bezos were supposed to announce today was postponed. The State Department says that the reason is Clinton's schedule at the G-20 Mexico summit and the Rio+20 conference later this week. However, the State Department knew about those events for many months and scheduled the Kindle press conference anyway, so it's likely that there's another reason for the postponement.
The National Federation for the Blind sent a letter to Secretary Clinton on June 18th that said that “any agreement by the United States to
procure inaccessible Kindle, or other, e-readers is a violation of the
law, including Section 508 of the Rehabilitation Act.” That could be a
reason for the decision to postpone the event.