Releases
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This is a page for tracking in-progress releases. For maintenance releases, we use a general checklist to ensure we don't miss anything.
- perhaps you'd like to see who release drivers for various releases are?
- or perhaps you'd like to learn more about the priority rankings we assign to releases?
- you might even wonder how we use flags to manage our releases?
- or what branches exist and when they branched?
- perchance you're confused about update terminology?
- maybe you'd like to know about our various branch support levels?
- perhaps you want to see the RapidRelease Calendar for future aurora merges, beta merges, and releases?
- maybe you are interested in checking the Feature Release Tracker for upcoming features?
Upcoming Releases
Please do not edit scheduled dates if you are not a release driver.
Note: the Beta, Aurora and Nightly dates are code merge dates, not release dates.
Based on Gecko 146
Firefox 146
Firefox
Currently in BETA channel
Moves to RELEASE week of Week of 2013-02-18
Moves to RELEASE week of Week of 2013-02-18
Based on Gecko 54
Firefox 54
Firefox
Currently in AURORA channel
Moves to BETA week of Week of 2013-01-06
Moves to BETA week of Week of 2013-01-06
Thunderbird 54
Thunderbird
Currently in EARLYBIRD channel
Moves to BETA week of Week of 2013-01-06
Moves to BETA week of Week of 2013-01-06
Based on Gecko 147
Firefox 147
Firefox
Currently in NIGHTLY channel
Moves to BETA week of Week of 2013-01-06
Moves to BETA week of Week of 2013-01-06
Thunderbird 147
Thunderbird
Currently in DAILY channel
Moves to BETA week of Week of 2013-01-06
Moves to BETA week of Week of 2013-01-06
Next Thunderbird Major Release
Thunderbird 24
Moves to RELEASE on 2013-09-17
Other releases
| Name | Scheduled Release Date | Links |
|---|---|---|
| 10.0esr and 17.0esr follow same schedule as Firefox and Thunderbird security fixes only | ||
| Thunderbird 17.0 follows same schedule as Thunderbird 17.0esr security fixes only | ||
| SeaMonkey follows same schedule as Firefox and Thunderbird | ||
| SeaMonkey 2.15 Based on GECKO 18 |
Currently in BETA Moves to Released on January 6, 2013 |
Release Notes |
| SeaMonkey 2.16 Based on GECKO 19 |
Currently in AURORA Moves to Beta on January 6, 2013 |
|
| SeaMonkey 2.17 Based on GECKO 20 |
Currently in NIGHTLY Moves to Aurora on January 6, 2013 |
|
Previous Releases
| Name | Release Date | Links |
|---|---|---|
| Firefox 18.0 | January 8 | Release Notes |
| Firefox 17.0.2esr | January 8 | Release Notes |
| Firefox 10.0.12esr | January 8 | Release Notes |
| SeaMonkey 2.15 | January 8 | Release Notes |
| Thunderbird 10.0.12esr | January 8 | Release Notes |
| 2012 | ||
|---|---|---|
| Name | Release Date | Links |
| Firefox 17.0.1 | November 30 | Release Notes |
| Firefox 17.0.1esr | November 30 | Release Notes |
| SeaMonkey 2.14.1 | November 30 | Release Notes |
| Firefox 17.0 | November 20 | Release Notes |
| Firefox 17.0esr | November 20 | Release Notes |
| Firefox 10.0.11esr | November 20 | Release Notes |
| SeaMonkey 2.14 | November 20 | Release Notes |
| Thunderbird 17.0 | November 20 | Release Notes |
| Thunderbird 17.0esr | November 20 | Release Notes |
| Thunderbird 10.0.11esr | November 20 | Release Notes |
| Firefox 17.0 for Android | November 19 | Release Notes |
| Thunderbird 16.0.2 | October 29 | Release Notes |
| Thunderbird 10.0.10esr | October 29 | Release Notes |
| Firefox 16.0.2 | October 26 | Release Notes |
| Firefox 10.0.10esr | October 26 | Release Notes |
| Firefox 16.0.2 for Android | October 26 | Release Notes |
| SeaMonkey 2.13.1 | October 12 | Release Notes |
| Firefox 10.0.9esr | October 12 | Release Notes |
| Thunderbird 10.0.9esr | October 12 | Release Notes |
| Firefox 16.0.1 | October 11 | Release Notes |
| Firefox 16.0.1 for Android | October 11 | Release Notes |
| Thunderbird 16.0.1 | October 11 | Release Notes |
| SeaMonkey 2.13 | October 9 | Release Notes |
| Firefox 16.0 | October 9 | Release Notes |
| Firefox 10.0.8esr | October 9 | Release Notes |
| Firefox 16.0 for Android | October 9 | Release Notes |
| Thunderbird 16.0 | October 9 | Release Notes |
| Thunderbird 10.0.8esr | October 9 | Release Notes |
| SeaMonkey 2.12.1 | September 10 | Release Notes |
| Thunderbird 15.0.1 | September 10 | Release Notes |
| Firefox 15.0.1 for Android | September 10 | Release Notes |
| Firefox 15.0.1 | September 6 | Release Notes |
| SeaMonkey 2.12 | August 28 | Release Notes |
| Firefox 15.0 | August 28 | Release Notes |
| Firefox 10.0.7esr | August 28 | Release Notes |
| Firefox 15.0 for Android | August 28 | Release Notes |
| Thunderbird 15.0 | August 28 | Release Notes |
| Thunderbird 10.0.7esr | August 28 | Release Notes |
| SeaMonkey 2.11 | July 17 | Release Notes |
| Firefox 10.0.6esr | July 17 | Release Notes |
| Firefox 14.0.1 for Android | July 17 | Release Notes |
| Firefox 14.0.1 | July 17 | Release Notes |
| Thunderbird 14.0 | July 17 | Release Notes |
| Firefox 14.0 for Android | June 26 | Release Notes |
| Firefox 13.0.1 | June 15 | Build Notes |
| Thunderbird 13.0.1 | June 15 | Build Notes |
| SeaMonkey 2.10.1 | June 15 | |
| SeaMonkey 2.10 | June 6 | |
| Firefox 10.0.5esr | June 5 | |
| Firefox 10.0.5 for mobile | June 5 | |
| Firefox 13 | June 5 | |
| SeaMonkey 2.9.1 | April 30 | |
| Thunderbird 12.0.1 | April 30 | Build Notes |
| Firefox 10.0.4esr | April 24 | |
| Firefox 10.0.4 for mobile | April 24 | |
| Firefox 12 | April 24 | |
| SeaMonkey 2.9 | April 24 | |
| SeaMonkey 2.8 | March 13 | |
| Firefox 3.6.28 | March 13 | |
| Firefox 10.0.3esr | March 13 | |
| Firefox 10.0.3 for mobile | March 13 | |
| Firefox 11 | March 13 | |
| SeaMonkey 2.7.2 | February 17 | Build Notes |
| Firefox 3.6.27 | February 17 | |
| Firefox 10.0.2 | February 16 | |
| Firefox 10.0.2 ESR | February 16 | |
| Thunderbird 10.0.2 | February 16 | |
| Thunderbird 10.0.2 ESR | February 16 | |
| Thunderbird 3.1.19 | February 16 | |
| Firefox 3.6.26 → 10.0.1 Advertised Update | February 14 | |
| Thunderbird 10.0.1 | February 12 | |
| Thunderbird 10.0.1 ESR | February 12 | |
| SeaMonkey 2.7.1 | February 10 | Build Notes |
| Firefox 10.0.1 | February 10 | |
| Firefox 10.0.1 ESR | February 10 | |
| Firefox 10.0 | January 31 | |
| Firefox 10.0 ESR | January 31 | |
| Firefox 3.6.26 | January 31 | |
| Thunderbird 10.0 | January 31 | |
| Thunderbird 10.0 ESR | January 31 | |
| Thunderbird 3.1.18 | January 31 | |
| SeaMonkey 2.7 | January 31 | Beta 1 Notes Beta 2 Notes Beta 3 Notes Beta 4 Notes Beta 5 Notes Final Build Notes |
| Firefox 3.6.x → 9.0.1 Advertised Update | January 19 |
For releases prior to 2012, please see the archive.