A major upgrade to the Blackboard Mobile App (IOS, Android) is due out in mid-September. I will post additional information about that app here. Feel free to use the the comment feature to post your insights.
Information on Bb's Web site
Email from System Admin (9/4)
the app is now available in the iTunes Store
A fee IS required for use. Verdict on the app so far. . . it is doing a better job of letting students access Bb content. It is not handling multimedia well and should not be used to take tests and/or quizzes. There is much less functionality for instructors.