Open edX Ulmo - December 2025 Release

These are the release notes for the Ulmo release, the 21st community release of the Open edX Platform, which will be released in December 2025. You can also review details about Open edX Platform Release Notes or learn more about the Open edX Platform.

What’s new in Ulmo? Click to read about new features:

Open edX Ulmo Release (December 2025)

And for more detail on individual products, refer to Open edX Ulmo Release - Product Release Notes.

What’s new in Ulmo? Operators and developers, click to read about new updates, patches, and configuration options.

Open edX Ulmo Developer & Operator Release Notes.

• Ulmo Overview
  • 🧑‍🏫 For Course Authors
  • 🎓 For Learners
  • ⚙️ For Site Operators
  • 🔮 Upcoming in Verawood (June 2026)
  • ⌚ Ready to Upgrade?
• Ulmo Release Notes
  • Library Updates in the Ulmo Release
  • Roles and Permissions in Libraries
  • Introducing Activity Notifications
  • Introducing the Administrative Console
  • Mobile Updates (Ulmo)
  • Course Catalog Revamp
  • Reusable LTI Configurations
  • Design Tokens (New Theming System)
  • Stay Up To Date with Ulmo
  • Ulmo Release is LTI Advantage Complete Certified
  • New Frontend Plugin Slots for the Ulmo Release
• Ulmo Developer & Operator Release Notes
  • Breaking Changes
  • Deprecations & Removals
  • Aspects Analytics
  • Administrators & Operators
  • Added Settings
  • Removed Settings
  • Added Feature Toggles
  • Removed Feature Toggles
  • Known Issues

Maintenance chart

Review Date	Working Group Reviewer	Release	Test situation
2025-04-28	BTR WG	Teak	Pass

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