March 2016 - IRIS v4.0 Released (current version)
March 2014 - IRIS v3.0 Released
Material change. metric name and definition language modified to provide clarity based on best practices and standard guidance.
November 2011 - IRIS v2.2 Released
Material change. Client Individuals (PI4060) and Client Organizations (PI9652) replaced Clients (PI7094). Metric bifurcated in order to increase specificity by accounting for client individuals and organizations separately.
February 2011 - IRIS v2.1 Released
September 2010 - IRIS v2.0 Released
Material change. Clients (PI7094) replaced Individuals Served (DES12.1). Metric modified to increase generalization.
September 2009 - IRIS v1.0 Released
New metric. Individuals Served (DES12.1) developed via Original IRIS Working Group.