Release notes tell you what new features and fixes have shipped in your version of Firefox.

Firefox ESR release notes

To see release notes for the current Firefox Extended Support Release (ESR) version if you are on the ESR Firefox update channel, see the Firefox ESR release notes.

Regular Firefox release notes

To see release notes for the most recent regular version of Firefox, see the latest Firefox release notes.

All Firefox versions

For links to all Firefox release notes listed by version, including regular and ESR releases, see the all Firefox releases page.

Enterprise release notes

To see Firefox release notes for issues that impact enterprises, including bug fixes, enhancements and policy changes, see Firefox Release Notes for Enterprise Firefox administrator reference.