The Symfony UX ecosystem has evolved significantly since its introduction, bringing modern frontend capabilities such as Live Components, Turbo integration, charts, autocomplete, and more to Symfony applications.
To help the ecosystem continue moving forward efficiently, we are updating the maintenance policy for Symfony UX 2.x.
Security-Only Maintenance for UX 2.x
As of today, Symfony UX 2.x is in security-only maintenance mode.
This means:
- Symfony UX 2.x will only receive security fixes going forward
- No bug fixes or feature improvements will be provided for 2.x
- All ongoing development work is focused on Symfony UX 3.x and newer versions
This policy is effective immediately.
End of Security Support
Symfony UX 2.x will remain in security-only maintenance until January 1, 2027.
After this date:
- Symfony UX 2.x will no longer receive any updates, including security fixes
- The 2.x branch will be considered end-of-life
What This Means for Developers
If your application is currently using Symfony UX 2.x, we strongly encourage planning and completing an upgrade to Symfony UX 3.x before January 2027.
Symfony UX 3.x is the actively maintained branch and will continue to receive:
- Security fixes
- Bug fixes
- New features
- Performance and compatibility improvements
Staying on Symfony UX 2.x means you will only receive security fixes until the end-of-support date, and no functional improvements.
Why This Change?
Focusing maintenance and development on Symfony UX 3.x allows the project to:
- Deliver new features faster
- Improve API consistency across packages
- Reduce maintenance overhead across multiple major versions
- Strengthen long-term ecosystem stability
This ensures Symfony UX can continue evolving as a modern, cohesive frontend toolkit for Symfony applications.
Upgrading to Symfony UX 3.x
For most projects, upgrading from 2.x to 3.x should be straightforward, particularly for applications that have kept dependencies reasonably up to date.
Upgrading before the end-of-support date ensures continued access to security fixes beyond today and ongoing improvements, while avoiding rushed migrations later.
Looking Ahead
Symfony UX remains a key part of the Symfony ecosystem, helping developers build rich, interactive applications while staying close to Symfony's core principles.
We encourage all teams using Symfony UX 2.x to begin planning their migration path toward Symfony UX 3.x ahead of January 1, 2027.
You can learn more about Symfony UX at https://ux.symfony.com and explore the source code at https://github.com/symfony/ux.