The proposed update for Unicode 8.0 addresses three issues where the bidirectional algorithm, as written, did not produce the intended results in certain specific cases. Details and justification for the proposed changes to the specification are in a background document accessible from the PRI page.
The closing date for this issue is October 20, 2014. For
information about how to discuss this issue and how to
supply formal feedback, please see the feedback and discussion
instructions on the PRI page.
The Public Review Issues index page is: http://www.unicode.org/review/