An independent publication
Tomorrow’s Firefox,
explained today.
Firefox Tomorrow explains upcoming Firefox Nightly, Beta, and Stable changes in clear, human English — sourced directly from Mozilla’s official release notes.
2261
Releases tracked
1348
New features
1201
Bug fixes
14205
Total changes
Nightly What’s landing first
Daily builds. The earliest signal of where Firefox is heading.
6 changes tracked
Beta What ships next
Features stabilising for the next general release.
23 changes tracked
What everyone gets
The release that millions of users see today.
12 changes tracked
Latest release notes
What’s in Firefox right now
- Nightly155.0a1Jul 20, 2026
Firefox Nightly 155.0a1
Starting with Firefox 154, We’re testing a simpler tab context menu in Firefox Labs. Turn it on in Settings > Firefox Labs > Streamline tab menu and tell us what you think on Mozilla Connect . Bug 2031718
New(2)Developer & Extensions(1)Web Platform & APIs(3)6changes across 3categories Read more → - Beta154.0b4Jul 20, 2026
Firefox 154.0 Beta
Exceptions for sites that have their cookies & site data cleared on shutdown can now be set without exempting the site from tracking protection and other cookie restrictions.
New(8)Changed(4)Developer & Extensions(3)Web Platform & APIs(8)23changes across 4categories Read more → - Stable153.0.1Jul 28, 2026
Firefox 153.0.1
Addressed a startup crash on Windows that could occur after updating Firefox, when some of the application's internal files could not be loaded. Firefox should now start in these cases, although parts of the interface may not display correctly until a further update completes ( Bug 2056926 ).
Fixed(11)Changed(1)12changes across 2categories Read more →
What’s coming next
In the Beta pipeline
Changes that have cleared Nightly and are now stabilising for the next general release.
- Beta154.0b4Jul 20, 2026
Firefox 154.0 Beta
Exceptions for sites that have their cookies & site data cleared on shutdown can now be set without exempting the site from tracking protection and other cookie restrictions.
New(8)Changed(4)Developer & Extensions(3)Web Platform & APIs(8)23changes across 4categories Read more → - Beta154.0b3
Firefox 154.0 Beta
Mozilla archive record for Firefox 154.0b3 Beta. This numbered build belongs to the Firefox 154.0 Beta train.
Build record(1)1change across 1category Read more →
Experimental features
Live in Nightly
The earliest experiments and engine-level changes you can try today.
- Nightly155.0a1Jul 20, 2026
Firefox Nightly 155.0a1
Starting with Firefox 154, We’re testing a simpler tab context menu in Firefox Labs. Turn it on in Settings > Firefox Labs > Streamline tab menu and tell us what you think on Mozilla Connect . Bug 2031718
New(2)Developer & Extensions(1)Web Platform & APIs(3)6changes across 3categories Read more → - Nightly154.0a1Jun 16, 2026
Firefox Nightly 154.0a1
Firefox 154.0a1 Nightly train. Nightly is a continuously updated daily-build channel, so this record represents the version train rather than every binary produced each day.
Build record(1)1change across 1category Read more →
Release timeline
Latest 10 of 725 Stable & ESR releases
Covering 151.0.4 through 153.0.1.
- Stable Firefox 153.0.1✓ 11 fixed Jul 28, 2026
- Stable Firefox 153.0✦ 13 new ⌨ 16 dev Jul 21, 2026
- Stable Firefox 152.0.6✦ 1 new ✓ 4 fixed Jul 14, 2026
- Stable Firefox 152.0.5✓ 2 fixed Jul 7, 2026
- Stable Firefox 152.0.4✦ 1 new ✓ 4 fixed Jun 30, 2026
- Stable Firefox 152.0.3✓ 2 fixed Jun 25, 2026
- Stable Firefox 152.0.2✓ 5 fixed Jun 23, 2026
- Stable Firefox 152.0.1✓ 3 fixed Jun 18, 2026
- Stable Firefox 152.0✦ 9 new ✓ 4 fixed ⌨ 11 dev Jun 16, 2026
- Stable Firefox 151.0.4✓ 5 fixed Jun 9, 2026