March 2016 - IRIS v4.0 Released (current version)
Immaterial change. Minor revision to metric definition language in order to align consistency of metric with catalog's structure and style.
March 2014 - IRIS v3.0 Released
November 2011 - IRIS v2.2 Released
New metric. Units/Volume Sold: Certified (PI7289) developed via IRIS Taxonomy Development Group.