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Release information

Firefox 135.0
Based on Gecko 135

Released on 2025-02-04

Thunderbird 128.7.0esr
Based on Gecko 128.7.0esr

Released on 2025-02-05

All Releases

Firefox Release Management pointers

• Release calendar
• Release process overview
• Release owners
• More about release management…

Support for users

Support for developers

Firefox Docs

Contributing to Mozilla

• Mozilla project-wide status meetings (every Monday)
• Other project calls
• Mozilla projects (Firefox, Platform, Add-ons, etc.)
• Student Ambassadors
• Why contribute to Mozilla?
• Discover new ways to contribute

How to use this wiki

• Mozilla Community Participation Guidelines (CPG)
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