The Ultra Ethernet Consortium maintains this page to make prior public versions of the Ultra Ethernet Specification discoverable. The latest published specification remains the recommended version for current implementation reference unless a specific earlier version is required for historical, citation, or comparison purposes.

Older specification versions are provided for transparency and archival reference.

Version	Release Date	Description	Link
1.0.2	January 28, 2026	Current published version. Correction to CMS congestion control algorithms and other editorial clarifications.	Download Specification
1.0.2 Release Notes	January 28, 2026	Release notes for Ultra Ethernet Specification v1.0.2.	Download Release Notes
1.0.1	September 5, 2025	Editorial clarifications and correction to the RCCC source algorithm.	Download Specification
1.0	June 11, 2025	Initial public release of the Ultra Ethernet Specification.	Download Specification