The process to adopt the next version of LEED has been pushed back according to an announcement by USGBC President and CEO S. Richard Fedrizzi earlier this week. The change means LEED 2012 (now being called LEED v4) will likely not be brought up for a vote on adoption until the middle of next year.
The new standard has already been through four comment periods, with the credit language and the manner in which credits would be evaluated under discussion. There have been revisions in each of these comment periods. A fifth comment period is now scheduled for this fall (October 2 – December 10) and the actual balloting on adoption of LEED v4 is expected to begin June 1, 2013.