March 2016 - IRIS v4.0 Released (current version)
Immaterial change. Minor revision to calculation language for clarity.
March 2014 - IRIS v3.0 Released
Immaterial change. Minor revision to definition language for clarity.
November 2011 - IRIS v2.2 Released
February 2011 - IRIS v2.1 Released
Material change. Client Retention Rate (PI9319) replaced Microfinance Dropout Rate (PI9282). Metric modified to maintain consistency with outside frameworks.
September 2010 - IRIS v2.0 Released
Immaterial change. Microfinance Dropout rate (PI9282) replaced Drop out rate (M11). IRIS ID / metric name changed due to framework upgrade. Minor revision to definition language for clarity.
September 2009 - IRIS v1.0 Released
New metric. Drop out rate (M11) developed via Original IRIS Working Group.