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June 2022 - IRIS v5.3 Released (current version)
Immaterial change. Minor revision to usage guidance for clarity.
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May 2021 - IRIS v5.2 Released
Material change. Clarified options within metric definition to enhance data comparability.
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January 2020 - IRIS v5.1 Released
No change.
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May 2019 - IRIS v5.0 Released
No change.
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March 2016 - IRIS v4.0 Released
Immaterial change. Minor revision to definition language in order to align consistency of metric with catalog's structure and style.
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March 2014 - IRIS v3.0 Released
Immaterial change. Minor revision to definition language for clarity.
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November 2011 - IRIS v2.2 Released
No change.
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February 2011 - IRIS v2.1 Released
No change.
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September 2010 - IRIS v2.0 Released
Immaterial change. Housing Type (PD2532) replaced Housing Units: Type (CD4.2). IRIS ID / metric name changed due to framework upgrade. Minor revision to definition language for clarity.
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September 2009 - IRIS v1.0 Released
New metric. Housing Units: Type (CD4.2) was developed via the Original IRIS Working Group.