v2026.9.14 v4.20.6

high risk

enfein/mieruSep 14, 2026 → Sep 16, 20262 days between releases

What's New

Release notes are for different software, preventing direct comparison.

New Features

  • Fixed `count(*)` under-counting parallel edges in graph traversals
  • Resolved index population issues with unsynced delta matrices
  • Improved plan-cache safety for star aggregations

Bug Fixes

  • Remote dashboard sessions no longer expire on refresh bursts
  • Long-lived processes stop leaking duplicate state.db writer handles

Upgrade Notes

The target release notes are for FalkorDB, which is incompatible with the source release notes for Hermes Agent.

The Two Releases

v2026.9.14

Hermes Agent v0.21.3 (v2026.9.14)

Sep 14, 2026· 1 month ago

A patch release addressing remote dashboard session expiration issues and database handle leaks. It rolls up approximately 338 PRs to stabilize the remote gateway and client connections.

Full release notes
v4.20.6

v4.20.6

Sep 16, 2026· 1 month ago

This release focuses on critical bug fixes related to graph traversal and index population. It addresses an issue where `count(*)` queries incorrectly collapsed parallel edges and a performance/stability issue where unsynced delta matrices could cause index population to skip rows or hang indefinitely.

Full release notes