(http://www.buildinggreen.com) — In a surprise move, the U.S. Green Building Council (USGBC) announced today that it is postponing plans to ballot the next version of LEED until as late as June 2013. With this announcement, USGBC promises to keep LEED 2009 available for a full three years from now, although it intends to gradually ramp up incentives for teams to move to the new version of LEED during that time.