Merge pull request #2205 from prestist/new-release-2.26.0

docs/release-notes: update for 2.26.0

Author: prestist

docs/release-notes.md

@@ -4,22 +4,30 @@ nav_order: 9
 
 # Release Notes
 
-## Upcoming Ignition 2.26.0 (unreleased)
+## Upcoming Ignition 2.27.0 (unreleased)
 
 ### Breaking changes
 
 ### Features
 
+### Changes
+
+### Bug fixes
+
+
+## Ignition 2.26.0 (2026-02-17)
+
+### Features
+
 - Mark the 3.6.0 config spec as stable
 - No longer accept configs with version 3.6.0-experimental
 - Create new 3.7.0-experimental config spec from 3.6.0
 
-### Changes
-
 ### Bug fixes
 
 - Include `groupmod` binary in initramfs ([#2190](https://github.com/coreos/ignition/pull/2190))
 
+
 ## Ignition 2.25.1 (2025-12-22)
 
 ### Bug fixes