March 2016 - IRIS v4.0 Released (current version)
March 2014 - IRIS v3.0 Released
Material change. Metric definition modified to provide clarity based on best practices and standard guidance.
November 2011 - IRIS v2.2 Released
Immaterial change. Client Individuals: Very Poor (PI9835) replaced Clients: Very Poor (PI9835). Minor revision to definition language and metric name for clarity.
February 2011 - IRIS v2.1 Released
September 2010 - IRIS v2.0 Released
Immaterial change. Clients: Very Poor (PI9835) replaced Socioeconomic Group Served: Very Poor (DES14.1). IRIS ID / metric name changed due to framework upgrade. Minor revision to definition language for clarity.
September 2009 - IRIS v1.0 Released
New metric. Socioeconomic Group Served: Very Poor (DES14.1) developed via Original IRIS Working Group.