August 2012 Release 12_8 using refactored Greengenes workflow Chimera checking using Chimera Slayer and Bellerophon against consensus from 94% OTUs 2-study heuristic dropped Greengenes workflow software placed under the GNU Public license > 1 million 16S sequences Coordination with Silva for consistant taxon names February 2013 Release 13_2 Targeting 1.5 million 16S sequences Beta-testing community driven taxonomy curation Greengenes workflow streamlined to automatically obtain and process newly deposited sequences Preliminary 18S release August 2013 Release 13_8 Community driven taxonomy curation in effect Refine the Eukaryota taxonomy Initial multi-locus phylogeny adoption to support stable groups