This is the NIEM 5.1 minor release.
In a minor release, content may be updated in domains and code tables. Core, namespaces imported by Core, and the architecture, which is defined by the NIEM Naming and Design Rules (NDR), will remain locked until the next major release.
The following is a summary of the key changes made in this release. More details are available from the 5.1 issues in the NIEM Releases issue tracker, and the change log spreadsheet in the release package.
Biometrics domain
CUI
Cyber domain (new)
Emergency Management domain
Justice domain
Military Operations domain
NCIC codes
Updated ISO 639-3 language codes (2012-02-18 update) (#222)
Updated ucr:IncidentBiasMotivationCodeSimpleType code value and definition (#229)