NIEM 5.2 Release (Draft)

NIEM 5.2 will be a minor release and is currently under development. Publication is scheduled for Fall 2022.


The release is currently in the pre-alpha stage and no updated schemas are available yet for review.


This schedule is subject to change.

Draft Date Issues Description
Alpha 1 Apr 2022   Major domain content submissions due.
Beta 1 June 2022   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 Aug 2022   QA and preparations for the release. Only bug fixes are considered during this stage; other requests will be queued for the following release.
Release Fall 2022   Publish release and update tools (SSGT, Movement, Migration Tool)

Additional phases (e.g., Beta 2) may be added as needed during the development process.


The following changes are expected to appear in NIEM 5.2:

  • Cyber domain - new Cyber Physical System (CPS) content

  • International Human Services - new domain

  • Learning and Development - new domain

  • MilOps - new content from USMTF (US Message Text Format) messages about military operations, missions, resources, readiness, and training.