The following is a timeline that shows when new domains were added to NIEM or underwent significant changes.
NIEM 1.0 (2006)
- Emergency Management (em)
- Immigration (im)
- Infrastructure Protection (ip)
- Intelligence (intel)
- International Trade (it)
- Justice (j)
- Screening (scr)
NIEM 2.0 (2007)
- Merged the Universal Core (u) and Common Core (c) namespaces into a single NIEM Core (nc) namespace
NIEM 2.1 (2009)
- Chemical, Biological, Radiological, Nuclear (cbrn)
- Family Services (fs)
- Maritime (m)
NIEM 3.0 (2013)
- Biometrics (biom)
- Family Services (fs) became Children, Youth, and Family Services (cyfs)
- Military Operations (mo) was introduced as a domain update after the NIEM 3.0 release
NIEM 3.1 (2015)
- Human Services (hs)
- Military Operations (mo)
NIEM 3.2 (2016)
- Surface Transportation (st)
NIEM 4.0 (2017)
- Agriculture (ag)
- Children, Youth, and Family Service (cyfs) was merged into Human Services (hs)
NIEM 4.1 (2018)
- No new domains were added to NIEM 4.1
NIEM 4.2 (2019)
- No new domains were added to NIEM 4.2
NIEM 5.0 (2020)
- Controlled Unclassified Information (cui) - added as auxiliary content
- Statistics content (stat) - added as auxiliary content
NIEM 5.1 (2021)
NIEM 5.2 (2022) - current release
- Learning and Development (lrn-dev)
- MilOps USMTF subdomain (usmtf)