The US Green Buidling Council announced today its second open comment period (PDF) for the proposed 2012 update to its LEED green building rating system.

Comments will be collected from projects testing pilot credits, from USGBC-moderated forums and various stakeholder webinars.  Visit the LEED Rating System Development site to access the proposed drafts and supporting material.

LEED User (a service of Building Green) provides a useful breakdown of the changes and a discussion forum to track.

Last round they got 6000 comments – an indicator of how influential LEED has become. Comment away!