v2026.9.21 v12.4.0
high risk
NousResearch/hermes-agentSep 21, 2026 → Sep 22, 20261 day between releases
What's New
Major version jump introduces WebGL2 requirements and new email/flow features
Breaking Changes
- MapLibre GL JS update mandates WebGL2 support
- Unhead update requires @unhead/vue 3.x as a peer dependency
- Type definitions updated with nullable fields for relations and policies
New Features
- Native Mailtrap email transport support added
- Flows module reorganized with folders, search, and import/export
- Disabled inactive collections in the Studio
- Support for hiding manual Flow buttons
Upgrade Notes
MapLibre requires WebGL2 support; upgrade Unhead to v3.x; handle new nullable type definitions.
The Two Releases
v2026.9.21
Hermes Agent v0.21.4 (v2026.9.21)
Sep 21, 2026· 1 month ago
This is a patch release (v0.21.4) aggregating approximately 1,800 merged PRs since v0.21.3. It provides a stable tagged release for downstream consumers like Docker images and Hermes Cloud, though full documentation is deferred to v0.22.0.
Full release notesv12.4.0
v12.4.0
Sep 22, 2026· 29 days ago
A feature release accompanied by several breaking changes due to dependency updates and type definition refinements.
Full release notes