A majority of the U.S. Green Building Council's members have approved LEED version 4, which paves the way for its launch at the November 2013 Greenbuild conference. The USGBC's response to concerns about the shift to LEED v4 coming too quickly is to let LEED 2009 and LEED v4 coexist. Registration by project teams will be allowed for either of the standards until June 1, 2015, after which LEED v4 will become the sole accepted standard.

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