With 86% of the U.S. Green Building Council (USGBC) voting to approve, LEED v4 will be launched at Greenbuild in November 2013.

USGBC will allow projects to register for either LEED 2009 or LEED v4 until June 1, 2015, after which LEED v4 will be required.

ENGINEERING NEWS-RECORD has the story here.