NIEM version 4.1 has been released. This is the current version of NIEM. Release notes are available on GitHub.
There are several ways to access NIEM 4.1:
You may download the complete NIEM 4.1 schema package as a zip file from release.niem.gov.
You may search the contents of NIEM 4.1 using Movement.
You may browse the contents of NIEM 4.1 and download schema subsets from the NIEM Schema Subset Generation Tool (SSGT).
Please send in any comment on the NIEM release as a GitHub issue.
In addition to the schema release, 4.1 incorporates a default JSON-LD context for NIEM 4.1: NIEM JSON leverages JSON-LD (JSON for Linked Data), enabling it to maintain consistency and to connect data across exchanges. The JSON-LD context is a JSON file that identifies, for every namespace for NIEM content, the namespace prefix and its corresponding namespace URI.
NIEM 4.2 release candidate (RC) 1 is now available for review!
The release package is available from the NIEM-Releases repository on GitHub and may also be downloaded as a zip file. The package includes XML schemas, documentation spreadsheets, a change log, a JSON-LD context file, and a README.
The final 4.2 release will be published Fall 2019.
NIEM 4.2 will be a minor release. Domain content and domain code tables may be updated as needed.
Core and Core code tables will be locked until the next major release (NIEM 5.0). Core Supplements can be published in the interim, with additive changes published in new schemas that can be used alongside or in addition to the originals.
The NIEM architecture, defined by the NIEM Naming and Design Rules, also remains locked in minor releases.
Please note: This schedule is subject to change.
|Alpha 1||Mar 2019||Alpha issues||Major domain content submissions due.|
|Beta 1||Aug 2019||Beta issues||Harmonize and refine alpha changes. Smaller content submissions, code table updates, and new requests may still be addressed during this time.|
|Release Candidate (RC) 1||Sep 2019||QA and preparations for the release. Only bug fixes are considered during this stage; other requests will be queued for the following release.|
|Release||Oct 2019||Publish release and update content tools (SSGT, Movement, and Migration Tool)|
Additional phases (e.g., Beta 2) may be added as needed during the development process.
There are also online tools available to search and view NIEM release content:
The Schema Subset Generation Tool (SSGT) can be used with any published release to search the model and build XML schema subsets for use in IEPDs. Go to
Options to choose a previous release. Learn more about the SSGT.
|Release||Release Package Links||Zip||Info||
|GitHub||Zip||Readme||NDR 4.0||Submit feedback|
|GitHub | release.niem.gov||Zip||Readme||NDR 4.0||
Also available in Movement
|NIEM 4.0||GitHub | release.niem.gov||Zip||Readme||NDR 4.0||
4.0 architecture update summary
Introduces a default JSON-LD context artifact
Supports the NIEM Code Lists Specification
|NIEM 3.2||GitHub | release.niem.gov||Zip||Info||NDR 3.0|
|NIEM 3.1||GitHub | release.niem.gov||Zip||Info||NDR 3.0|
|NIEM 3.0||GitHub | release.niem.gov||Zip||Info||NDR 3.0|
|NIEM 2.1||GitHub | release.niem.gov||Zip||Info||
NDR 1.3 +
|NIEM 2.0||GitHub | release.niem.gov||Zip||Info||NDR 1.3|
|NIEM 1.0||GitHub | release.niem.gov||Zip||Info|