March 2016 - IRIS v4.0 Released (current version)
Material change. Glossary and corresponding text in metric's usage guidance modified to clarify the definition of indirect control and to increase the metric's applicability.
March 2014 - IRIS v3.0 Released
Immaterial change. Minor revision to metric name and definition language for clarity.
November 2011 - IRIS v2.2 Released
New metric. Land Area Indirectly Controlled (PI3789) developed via Agriculture Working Group.