Horde 6.0 Stable Release is due in June 2026.
Release Manager: Torben Dannhauer.
Lead Architect: Ralf Lang
Horde 6 Feature release 6.1 is projected for October 2026
Lead Architect: Ralf Lang
Horde 6 roughly follows Semantic Versioning https://semver.org/
Feature releases get security support until two months into the next feature release.
The latest feature release of a major release gets up to 12 months of security support after a new major release.
Bug fix and feature backporting currently has no promise but we will generally accept backport PRs if the workload can reasonably be handled.
Horde 6.0 stable releases will target PHP 8.1 and higher but will probably not work on PHP 9.
Feature releases may raise the lower version bound to the oldest PHP version still in support as of https://www.php.net/supported-versions.php
Example: PHP 8.2 has security support until end of 2026 so a feature release in October 2026 could raise the minimum supported version to 8.2 but a feature release in Feburary 2027 could raise the minimum supported version to 8.3.
These bumps don't happen as a matter of course but only when it makes sense to use a language feature which requires the new version or when a dependency already requires it.