March 2016 - IRIS v4.0 Released (current version)
Immaterial change. Minor revision to definition language for clarity.
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: Urban (PI6751) replaced Clients: Urban (PI6751). Minor revision to definition language and metric name for clarity.
February 2011 - IRIS v2.1 Released
September 2010 - IRIS v2.0 Released
Material change. Clients: Urban (PI6751) replaced Location of Target Population: Semi-urban (DES14.3). Metric modified to increase clarity.
September 2009 - IRIS v1.0 Released
New metric. Target Population: Semi-urban (DES14.3) developed via Original IRIS Working Group.