Mozilla Firefox Release Schedule

by Melanie Gross on August 16, 2012 in Firefox - Last Update: July 19, 2021 - 17 comments

The Firefox Release Schedule overview offers information about past, present and future releases of the Mozilla Firefox web browser.

With three different versions of the Firefox web browser available at any time (Stable, Beta, Nightly), plus special builds that pop up every now and then and ESR versions, it is quite difficult to keep up with the browser's rapid release schedule.

To make matters even more complicated, some versions like the nightly versions get updated fairly often. To bring order into chaos, release schedules usually only concentrate on version increases and not all the updates that get released.

Mozilla's official Release Schedule page lists only the next version upgrade for Firefox stable, beta, aurora and nightly, but does not go beyond that. (Update: That changed with the introduction of the Rapid Release Calendar)

While you can try to calculate the releases after the next by adding 42 days to a fixed release date, actual release dates may fluctuate especially for the beta and aurora version increases.

Update 2 (2019): Firefox will be released every four weeks from 2020 onward.

Update (2016): Mozilla announced the move to a variable Firefox release schedule recently.

Firefox Release Schedule

mozilla firefox release schedule

The table currently covers all upcoming releases for the year, and even provides an outlook of the first releases of next year.

Mozilla Firefox Release Schedule

Our Firefox release schedule lists all Firefox versions, meaning Firefox Stable, Beta, Nightly, and ESR, the version they are updated to, and the date this is going to happen.

It won't reference minor version updates as those are not scheduled usually but pushed out when required.

Firefox 88, Beta 89, Nightly 90, Firefox ESR 78.10 -- 20.04.2021
Firefox 89, Beta 90, Nightly 91, Firefox ESR 78.11 -- 1.06.2021
Firefox 90, Beta 91, Nightly 92, Firefox ESR 78.12 -- 13.07.2021
Firefox 91, Beta 92, Nightly 93, Firefox ESR 91.0 and Firefox ESR 78.13 -- 10.08.2021
Firefox 92, Beta 93, Nightly 94, Firefox ESR 91.1 and Firefox ESR 78.14 -- 7.09.2021
Firefox 93, Beta 94, Nightly 95, Firefox ESR 91.2 and Firefox ESR 78.15 -- 5.10.2021
Firefox 94, Beta 95, Nightly 96, Firefox ESR 91.3 -- 2.11.2021
Firefox 95, Beta 96, Nightly 97, Firefox ESR 91.4 -- 7.12.2021
Firefox 96, Beta 97, Nightly 98, Firefox ESR 91.5 -- 11.01.2021

Past Firefox Releases

This is the list of past releases for Firefox. While it is not recommended to run any of those versions anymore, it may be used for reference.

Firefox 15, Beta 16,Â Aurora 17 - 28.8.2012
Firefox 16, Beta 17, Aurora 18 - 9.10.2012
Firefox 17, Beta 18, Aurora 19 - 20.11.2012
Firefox 18, Beta 19, Aurora 20 - 8.1.2013
Firefox 19, Beta 20, Aurora 21 - 19.2.2013
Firefox 20, Beta 21, Aurora 22 - 2.4.2013
Firefox 21, Beta 22, Aurora 23 - 14.5.2013
Firefox 22, Beta 23, Aurora 24 - 25.6.2013
Firefox 23, Beta 24, Aurora 25 - 27.6.2013
Firefox 24, Beta 25, Aurora 26,Â Firefox 24.0 ESR - 17.9.2013
Firefox 25, Beta 26, Aurora 27,Â Firefox 24.1 ESR - 29.10.2013
Firefox 26, Beta 27, Aurora 28,Â Firefox 24.2 ESR - 10.12.2013
Firefox 27, Beta 28, Aurora 29,Â Firefox 24.3 ESR - 21.1.2014
Firefox 28, Beta 29, Aurora 30, Nightly 31,Â Firefox 24.4 ESR - 4.3.2014
Firefox 29, Beta 30, Aurora 31, Nightly 32,Â Firefox 24.5 ESR - 29.4.2014
Firefox 30, Beta 31, Aurora 32,Â Nightly 33,Â Firefox 24.6 ESR - 10.6.2014
Firefox 31, Beta 32, Aurora 33,Â Nightly 34Firefox 31.0 ESR - 22.7.2014
Firefox 32, Beta 33, Aurora 34,Â Nightly 35,Â Firefox 31.1 ESR -2.9.2014
Firefox 33, Beta 34, Aurora 35, Nightly 36,Â Firefox 31.2 ESR - 14.10.2014
Firefox 34, Beta 35,Â Aurora 36, Nightly 37,Â Firefox 31.3 ESR - 25.11.2014
Firefox 35, Beta 36, Aurora 37, Nightly 38,Â Firefox 31.4 ESR - 13.1.2015
Firefox 36, Beta 37, Aurora 38, Nightly 39,Â Firefox 31.5 ESR - 24.02.2015
Firefox 37, Beta 38, Aurora 39, Nightly 40,Â Firefox 31.6 ESR - 7.4.2015
Firefox 38, Beta 39, Aurora 40, Nightly 41,Â Firefox 38.0 ESR - 19.5.2015
Firefox 39, Beta 40, Aurora 41, Nightly 42,Â Firefox 38.1 ESR - 30.6.2015
Firefox 40, Beta 41, Aurora 42, Nightly 43,Â Firefox 38.2 ESR - 11.8.2015
Firefox 41, Beta 42, Aurora 43, Nightly 44, Firefox 38.3 ESR - 22.9.2015
Firefox 42, Beta 43, Aurora 44, Nightly 45,Â Firefox 38.4 ESR - 3.11.2015
Firefox 43, Beta 44, Aurora 45, Nightly 46, Firefox 38.5 ESR - 15.12.2015
Firefox 44, Beta 45, Aurora 46, Nightly 47, Firefox 38.6 ESR - 26.1.2016
Firefox 45, Beta 46, Aurora 47, Nightly 48, Firefox 45.0 ESR - 8.3.2016
Firefox 46, Beta 47, Aurora 48, Nightly 49, Firefox 45.1 ESR - 26.4.2016
Firefox 47, Beta 48, Aurora 49, Nightly 50, Firefox 45.2 ESR - 7.6.2016
Firefox 48, Beta 49, Aurora 50, Nightly 51, Firefox 45.3 ESR - 2.8.2016
Firefox 49, Beta 50, Aurora 51, Nightly 52, Firefox 45.4 ESR - 20.9.2016
Firefox 50, Beta 51, Aurora 52, Nightly 53, Firefox 45.5 ESR - 15.11.2016
Firefox 50.0.1, Firefox ESR 45.5.1Â - 13.12.2016
Firefox 51, Beta 52, Aurora 53, Nightly 54, Firefox 45.6 ESR - 24.1.2017
Firefox 52, Beta 53, Aurora 54, Nightly 55, Firefox 45.7 ESR (start of Firefox 52.0 ESR) - 7.3.2017
Firefox 53, Beta 54, Aurora 55, Nightly 56, Firefox 45.8 ESR (Firefox 52.1 ESR) - 18.4.2017
Firefox 54, Beta 55, Nightly 57, Firefox ESR 52.2Â - 13.6.2017
Firefox 55, Beta 56, Nightly 58, Firefox ESR 52.3 - 8.8.2017
Firefox 56, Beta 57, Nightly 59, Firefox ESR 52.4 - 28.9.2017
Firefox 57, Beta 58, Nightly 60, Firefox ESR 52.5 - 14.11.2017
Firefox 58, Beta 59, Nightly 61, Firefox ESR 52.6 - 23.1.2018
Firefox 59, Beta 60, Nightly 62, Firefox ESR 52.7 - 13.3.2018
Firefox 60, Beta 61, Nightly 62. Firefox ESR 60.0, Firefox ESR 52.8 - 9.5.2018
Firefox 61, Beta 62, Nightly 63, Firefox ESRÂ 60.1, Firefox ESR 52.9 - 26.6.2018
Firefox 62, Beta 63, Nightly 64, Firefox ESRÂ 60.2 - 5.9.2018
Firefox 63, Beta 64, Nightly 65, Firefox ESRÂ 60.3 - 23.10.2018
Firefox 64, Beta 65, Nightly 66, Firefox ESR 60.4- 11.12.2018
Firefox 65, Beta 66, Nightly 67, Firefox ESR 60.5 -- 29.1.2019
Firefox 66, Beta 67, Nightly 68, Firefox ESR 60.6 -- 19.3.2019
Firefox 67, Beta 68, Nightly 69, Firefox ESR 60.7 -- 21.5.2019
Firefox 68, Beta 69, Nightly 70, Firefox ESR 68.0, Firefox ESR 60.8 -- 9.7.2019
Firefox 69, Beta 70, Nightly 71, Firefox ESR 68.1, Firefox ESR 60.9-- 3.9.2019
Firefox 70, Beta 71, Nightly 72, Firefox ESR 68.2 -- 22.10.2019
Firefox 71, Beta 72, Nightly 73, Firefox ESR 68.3 -- 03.12.2019
Firefox 72, Beta 73, Nightly 74, Firefox ESRÂ 68.4 --7.01.2020
Firefox 73, Beta 74, Nightly 75, Firefox ESRÂ 68.5 -- 11.02.2020
Firefox 74, Beta 75, Nightly 76, Firefox ESRÂ 68.6 -- 10.03.2020
Firefox 75, Beta 76, Nightly 77, Firefox ESRÂ 68.7 -- 07.04.2020
Firefox 76, Beta 77, Nightly 78, Firefox ESRÂ 68.8 -- 05.05.2020
Firefox 77, Beta 78, Nightly 79, Firefox ESRÂ 68.9 -- 02.06.2020
Firefox 78, Beta 79, Nightly 80, Firefox ESRÂ 68.10 and 78.0 -- 30.06.2020
Firefox 79, Beta 80, Nightly 81, Firefox ESRÂ 68.11 and 78.1 -- 28.07.2020
Firefox 80, Beta 81, Nightly 82, Firefox ESRÂ 68.12 and 78.2 -- 25.08.2020
Firefox 81, Beta 82, Nightly 83, Firefox ESRÂ 78.3 -- 22.09.2020
Firefox 82, Beta 83, Nightly 84, Firefox ESR 78.4 -- 20.10.2020
Firefox 83, Beta 84, Nightly 85, Firefox ESR 78.5 -- 17.11.2020
Firefox 84, Beta 85, Nightly 86, Firefox ESR 78.6 -- 15.12.2020
Firefox 85, Beta 86, Nightly 87, Firefox ESR 78.7 -- 26.01.2021
Firefox 86, Beta 87, Nightly 88, Firefox ESR 78.8 -- 23.02.2021
Firefox 87, Beta 88, Nightly 89, Firefox ESR 78.9 -- 23.03.2021

The release schedule for Firefox is regularly updated by us so that you will always know when future versions and editions of Firefox are released by Mozilla.

Since Mozilla moved from a 42 release cycle to a flexible scheme, it becomes even more important to keep an eye on these releases.

Summary

Article Name

Mozilla Firefox Release Schedule

Description

Find out when new versions of the Firefox web browser get released. Track releases for all browser channels - Stable, Beta, Aurora and Nightly -- as well as ESR releases.

Author

Melanie Gross

Publisher

Ghacks Technology News

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Comments

ilev said on August 16, 2012 at 8:21 pm


Where is the Firefox Release Schedule for Windows 8 metro, WP8, Android, Mac OSX, Linux..?
A&L said on August 16, 2012 at 8:37 pm


there’s also a palemoon version
http://www.palemoon.org/
1. A Thompson said on October 19, 2013 at 11:44 pm
  
  
  and as well as Palemoon there is also Cometbird…used it for years.
  
  http://www.cometbird.com/
jay said on August 16, 2012 at 9:17 pm


Could you perhaps make a comparison of Firefox vs Palemoon vs Waterfox?
1. Jim said on August 16, 2012 at 10:44 pm
  
  
  First time I’ve heard of Waterfox. I’ll check it out. Thanks!
  
  I tried Palemoon. I got tired of it always being a couple of versions behind generic FF. It is supposedly optimized for Windows with some features disabled. I honestly didn’t notice any difference. Ultimately I went back to FF just to avoid the hassles.
2. boris said on August 16, 2012 at 11:30 pm
  
  
  Tried Waterfox. The same memory problems as with generic Firefox. Did not see any speed improvements.
3. cezi said on August 18, 2012 at 2:29 am
  
  
  Waterfox is just FF stable but 64bit,
  Palemoon differs more ,it can change displaying your FF profile-especially if it was huge + very tweaked- then it is better to have different one , Waterfox64bit(there is only 64bit) works well with FF profile
  
  IN both cases if U’re uninstall P/W be careful not to delete FF profile – that’s the only one caveats..Just have it backuped..
  
  If till now you’re staying with stable FF realeses you can go for P/W , W esp. if you want 64bit , but if you like Nightly/ Aurora -stay with them – and well , who said that you should use
  only one ?
  
  for more: http://www.palemoon.org = 32bit and 64bit , also portable
  
  http://waterfoxproject.org/
  
  https://sourceforge.net/projects/waterfoxproj/
  
  But G.Chroma replace with Chromium or Iron without hesitation
  Other webkit options to look into : qupzilla , maxthon ,avant
kay said on August 17, 2012 at 2:37 pm


I like Waterfox. Works great for me. Unload some of the add-ons if you are having issues (with any browser).
Mystique said on August 17, 2012 at 6:22 pm


The most irritating thing about firefox is the constant crashing on pages loaded with animated gifs.
1. miner said on August 19, 2012 at 6:37 am
  
  
  Sounds like your system is infected or you’re incompetent but your issues are related to FF
2. miner said on August 19, 2012 at 6:39 am
  
  
  err…. *are NOT related to FF
3. Ry said on September 19, 2012 at 10:57 am
  
  
  You either have a graphics or memory issue or your profile is messed up. Try a clean profile.
4. Odin said on September 5, 2017 at 10:46 pm
  
  
  try to make a new profile and see if it still happens
TelV said on December 3, 2017 at 6:31 pm


@ Martin,

There appears to be a way of preventing the move to update ESR from 52.6 to 59 in the CTR developer’s thread on Github. It would appear that if you decline the upgrade to 59, ESR will update to 52.7 thereafter to 52.8. Only after that will users be required to update to 59.2 which won’t support legacy add-ons anymore. Details are in the “Note” in the first post: https://github.com/Aris-t2/ClassicThemeRestorer/issues/299

Mozilla Firefox Release Schedule