Symfony Releases
Track every Symfony release from latest stable to end-of-life. Version timelines, LTS strategy, PHP compatibility, and upgrade guidance for PHP teams.
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Version Timeline
All tracked releases with lifecycle status and EOL dates.
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Lifecycle Timeline
Visual overview of active support and maintenance windows.
Upgrade Paths
Migration guidance between major versions — breaking changes, effort estimates, and tips.
Breaking Changes
- PHP 8.1+ required
- All deprecated code from 5.x removed
- Return type declarations added throughout
- Removed legacy security system
- Event dispatcher changes
Migration Notes
Follow the standard path: upgrade to 5.4 LTS first, fix ALL deprecation warnings (they become errors in 6.0), then upgrade to 6.0. Use Rector with symfony-60 config to automate type declaration changes.
Breaking Changes
- PHP 8.2+ required
- All deprecated code from 6.x removed
- Native type declarations enforced everywhere
- Removed compatibility layers
- Messenger component changes
Migration Notes
Same pattern: fix all 6.4 deprecation warnings first. 6.4 and 7.0 have identical features — 7.0 just removes backward compat. If your code runs on 6.4 with zero deprecation warnings, it runs on 7.0.
Breaking Changes
- All changes from 7.0 through 7.3
- PHP 8.2+ required
- Multiple minor feature additions (non-breaking in .4)
Migration Notes
LTS-to-LTS jump. Fix all 6.4 deprecations, then go straight to 7.4 (skipping intermediate versions). 7.4 LTS will be supported until November 2029. Best target for teams wanting long-term stability.
Version Risk Assessment
Evaluate risk factors before choosing a version for production.
| Version | EOL Risk | CVE Risk | Ecosystem | Cloud Support | Overall | Recommended Action |
|---|---|---|---|---|---|---|
| Symfony 5.4 LTS | High | Low | LTS | Full | High | Security support ends Nov 2025 — plan upgrade to 6.4 or 7.x |
| Symfony 6.0-6.3 | Critical | Medium | Unsupported | Legacy | Critical | Past EOL — upgrade to 6.4 LTS |
| Symfony 6.4 LTS | Low | Low | Active | Full | Low | LTS until Nov 2027 — recommended stable target |
| Symfony 7.0-7.1 | High | Low | Maintenance | Full | High | Update to 7.2+ |
| Symfony 7.2 | Low | Low | Active | Full | Low | Current stable |
Risk combines EOL status, PHP version requirements, security patch availability, and Composer ecosystem support. Assessed as of March 2026.
Version Feature Comparison
Side-by-side feature differences across major versions.
| Feature | 5.4 LTS | 6.4 LTS | 7.0 | 7.2 |
|---|---|---|---|---|
| PHP minimum | 7.2 | 8.1 | 8.2 | 8.2 |
| PHP maximum tested | 8.1 | 8.3 | 8.3 | 8.4 |
| Native types | Partial | Full | Enforced | Enforced |
| AssetMapper (no Node) | No | Stable | Stable | Stable |
| Messenger component | Stable | Enhanced | Enhanced | Enhanced |
| Security authenticator | Legacy | New system | New system | New system |
| Scheduler component | No | No | No | Stable |
| Webhook component | No | Experimental | Stable | Stable |
| Remote Event component | No | No | Experimental | Stable |
| Attribute-based config | No | Expanded | Expanded | Expanded |
| LTS until | Nov 2025 | Nov 2027 | N/A | N/A |
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Health Status
Overall support health
EOL Countdown
Next end-of-life date
Latest Version
Current stable release
CVE Status
Known vulnerabilities
Frequently Asked Questions
Common questions about Symfony releases and lifecycle.