Add Scheduled Maintenance Changelog

src/changelog/2025/11/sso-session.md

@@ -2,7 +2,7 @@
 title: SSO control over Session life
 description: Individual SSO profiles can now override Session life and idle time
 date: 2025-11-06 12:00:00.0
-authors: ['ben-hardil']
+authors: ['ben-hardill']
 tags:
   - changelog
 ---

src/changelog/2025/12/scheduled-maintenance.md

@@ -0,0 +1,31 @@
+---
+title: Scheduled Maintenance Mode
+description: Schedule time and day of the week to apply Node-RED updates
+date: 2025-12-19 12:00:00.0
+authors: ['ben-hardill']
+tags:
+  - changelog
+issues:
+  - "https://github.com/FlowFuse/flowfuse/issues/5554"
+---
+
+Included in the FlowFuse 2.25.0 release is the ability to schedule times and days of the 
+week for Hosted Node-RED instances to upgrade to the latest available version.
+
+This ensures that fixes and security updates are applied promptly.
+
+![Maintenance Section of Instance Settings](./images/scheduled-maintenance.png)
+_Maintenance Section of Instance Settings_
+
+You can select multiple days of the week and an hour of the day the update will take 
+place. The restart will be targeted in the first 30 minutes of the selected hour.
+
+As well as scheduling upgrades, you can also enable scheduled restarts even if not update 
+is available which may be useful to help with ensuring things run smoothly.
+
+Self Hosted users can configure default restart/upgrade times at a TeamType level, 
+FlowFuse Cloud Starter Tier users will have this enabled by default and it will run,
+at weekends.
+
+![TeamType Scheduled Maintenance Settings](./images/scheduled-maintenance-admin.png)
+_TeamType Scheduled Maintenance Settings_