Mozilla Firefox
The latest Mozilla Firefox version, its release date and the next scheduled releases, from Mozilla’s own release pages.
- Current stable version
- 157.0
- Released
- Next version
- 158
- Next release
- Engine
- Gecko
- Release cadence
- every 2 weeks (moved from every 4 weeks starting with Firefox 155; described by Mozilla as an experiment)
The current stable version of Mozilla Firefox is 157.0, released on 29 September 2026. The next stable release, Mozilla Firefox 158, is scheduled for 13 October 2026.
What is new in Mozilla Firefox 157.0:
- Biggest visual refresh in years, with new built-in light/dark themes and a new compact mode
- WebRTC video calls can use hardware AV1 decoding on supported devices
- Warning shown when Firefox is set up to record its encryption keys; Firefox Suggest expands to 16 more European countries
Release cadence. Every 2 weeks (moved from every 4 weeks starting with Firefox 155; described by Mozilla as an experiment).
Firefox ESR. ESR 153 (153.4.0 on 2026-09-29); ESR 140 (140.17.0 on 2026-09-29), supported until 2026-10-13; ESR 115 (115.42.0), supported until 2027-03.
Questions
What is the latest version of Mozilla Firefox?
Mozilla Firefox 157.0, released on 29 September 2026.
When is the next Mozilla Firefox release?
Mozilla Firefox 158: 13 October 2026; Mozilla Firefox 159: 27 October 2026; Mozilla Firefox 160: 10 November 2026; Mozilla Firefox 161: 24 November 2026.
Compare all browsers in the browser release tracker.
- Maker
- Mozilla
- Upcoming releases
Version Stable date Source 158 2026-10-13 https://whattrainisitnow.com/calendar/ 159 2026-10-27 https://whattrainisitnow.com/calendar/ 160 2026-11-10 https://whattrainisitnow.com/calendar/ 161 2026-11-24 https://whattrainisitnow.com/calendar/ - Previous major releases
Version Date 156.0 2026-09-15 155.0 2026-09-01 154.0 2026-08-18 - Release notes
- mozilla.org
- Official schedule
- whattrainisitnow.com
- Last checked
- Sources
Source Link Mozilla Firefox release notes https://www.mozilla.org/en-US/firefox/157.0/releasenotes/ Firefox 156 date https://whattrainisitnow.com/release/?version=156 Firefox 155 date https://www.mozilla.org/en-US/firefox/155.0/releasenotes/ Firefox 154 date https://www.mozilla.org/en-US/firefox/154.0/releasenotes/ Cadence https://blog.mozilla.org/l10n/2026/07/23/firefox-release-changes-and-localization/ Cadence is an experiment https://groups.google.com/a/mozilla.org/g/dev-platform/c/qlaQ1YSlOP8 ESR versions shipped with 157 https://whattrainisitnow.com/release/?version=157 ESR 140 end https://whattrainisitnow.com/release/?version=esr Engine https://firefox-source-docs.mozilla.org/overview/gecko.html Upcoming releases 158-161 https://whattrainisitnow.com/calendar/