The newest Keycloak version available in June 2026 is 26.6.3 , and Keycloak’s downloads page lists that as the latest release. The Keycloak release notes page also reflects current 2026 releases, and an end-of-life tracking page shows 26.6.3 as the latest for the 26.6 line as of early June 2026.

Quick Scoop

  • Latest version: 26.6.3.
  • Release line: 26.6, with 26.6.3 marked latest on June 4, 2026.
  • Nearby release history: 26.6.1 was released in April 2026.

Practical note

If you’re choosing a version for a fresh install in June 2026, 26.6.3 is the safest answer because it is the current download release listed by Keycloak itself.