Releases: Difference between revisions
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== Previous Releases == | == Previous Releases == | ||
=== | === 2015 === | ||
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=== | === 2014 and earlier === | ||
For releases prior to | For releases prior to 2015, see [[Releases/Old|the archive]]. | ||
== Other Links == | == Other Links == | ||
Revision as of 02:36, 15 January 2015
Current Releases
Standard support
Based on Gecko 147

Firefox 147.0.3
Based on Gecko 147
Based on Gecko 147
Released on 2026-02-03

SeaMonkey 2.144
Based on Gecko 147
Based on Gecko 147
Released on 2014-12-04
Based on Gecko 31

Thunderbird 60.87.0
Based on Gecko 60
Based on Gecko 60
Released on 2026-02-03
Based on Gecko 28

Firefox OS 1.3
Based on Gecko 28
Based on Gecko 28
Released on 2014-03-17
Extended support
Based on Gecko 60

Firefox 60.87.0esr
Based on Gecko 60
Based on Gecko 60
Released on 2026-01-13
Upcoming Releases
NOTE: The dates listed in this section refer to the date of the code merge, not the date of release. See the branch migration calendar for more information.
Based on Gecko 148

Firefox 148
Based on Gecko 148
Based on Gecko 148
Currently in BETA channel
Moves to RELEASE week of February 24, 2026
Moves to RELEASE week of February 24, 2026

Thunderbird 148
Based on Gecko 148
Based on Gecko 148
Currently in BETA channel

SeaMonkey 2.145
Based on Gecko 148
Based on Gecko 148
Currently in BETA channel
Moves to RELEASE week of February 24, 2026
Moves to RELEASE week of February 24, 2026
Based on Gecko 54

Firefox 54
Based on Gecko 54
Based on Gecko 54
Currently in AURORA channel
Moves to BETA week of February 24, 2026
Moves to BETA week of February 24, 2026

Thunderbird 54
Based on Gecko 54
Based on Gecko 54
Currently in EARLYBIRD channel
Moves to BETA week of February 24, 2026
Moves to BETA week of February 24, 2026

SeaMonkey 2.51
Based on Gecko 54
Based on Gecko 54
Currently in AURORA channel
Moves to BETA week of February 24, 2026
Moves to BETA week of February 24, 2026
Based on Gecko 149

Firefox 149
Based on Gecko 149
Based on Gecko 149
Currently in NIGHTLY channel
Moves to BETA week of February 24, 2026
Moves to BETA week of February 24, 2026

Thunderbird 149
Based on Gecko 149
Based on Gecko 149
Currently in DAILY channel
Moves to BETA week of February 24, 2026
Moves to BETA week of February 24, 2026

SeaMonkey 2.146
Based on Gecko 149
Based on Gecko 149
Currently in NIGHTLY channel
Moves to AURORA week of February 24, 2026
Moves to AURORA week of February 24, 2026
B2G Releases

Firefox OS 1.4
Based on Gecko 30
Based on Gecko 30
Released on ??

Firefox OS 2.0
Based on Gecko 32
Based on Gecko 32
Currently in BETA channel
Moves to RELEASE week of ??
Moves to RELEASE week of ??

Firefox OS 2.1
Based on Gecko 34
Based on Gecko 34
Currently in AURORA channel
Moves to BETA week of ??
Moves to BETA week of ??

Firefox OS 2.2
Based on Gecko 37
Based on Gecko 37
Currently in NIGHTLY channel
Moves to AURORA week of ??
Moves to AURORA week of ??
Previous Releases
2015
| Release | Date | Notes |
|---|---|---|
2014 and earlier
For releases prior to 2015, see the archive.
Other Links
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?