Firefox Release Calendar

Upcoming releases
2024
Quarter Version Matching ESR Release Owner Nightly starts Soft code freeze Beta starts Release day
Q1 124 115.9 Dianna January 22 February 15 February 19 March 19
Q2 125 115.10 Ryan February 19 March 14 March 18 April 16
126 115.11 Donal March 18 April 11 April 15 May 14
127 115.12 Pascal April 15 May 9 May 13 June 11
Q3 128 115.13 + 128.0 Ryan May 13 June 6 June 10 July 9
129 115.14 + 128.1 Donal June 10 July 4 July 8 August 6
130 115.15 + 128.2 Pascal July 8 August 1 August 5 September 3
Q4 131 128.3 Dianna August 5 August 29 September 2 October 1
132 128.4 Ryan September 2 September 26 September 30 October 29
133 128.5 Donal September 30 October 24 October 28 November 26
2025
Q1 134 128.6 Pascal October 28 November 21 November 25 January 7
135 128.7 Dianna November 25 January 2 January 6 February 4

The above schedule can also be consulted as a detailed monthly view.

Click to toggle past releases table data
Past releases
Version Matching ESR Release owner Nightly starts Beta starts Release day
123.0 115.8 Pascal Chevrel 2023-12-19 2024-01-23 2024-02-20
122.0 115.7 Donal Meehan 2023-11-21 2023-12-19 2024-01-23
121.0 115.6 Ryan VanderMeulen 2023-10-24 2023-11-21 2023-12-19
120.0 115.5 Dianna Smith 2023-09-26 2023-10-24 2023-11-21
119.0 115.4 Donal Meehan 2023-08-29 2023-09-26 2023-10-24
118.0 115.3 Pascal Chevrel 2023-08-01 2023-08-29 2023-09-26
117.0 102.15 + 115.2 Ryan VanderMeulen 2023-07-04 2023-08-01 2023-08-29
116.0 102.14 + 115.1 Dianna Smith 2023-06-06 2023-07-05 2023-08-01
115.0 102.13 + 115.0 Donal Meehan 2023-05-09 2023-06-06 2023-07-04
114.0 102.12 Pascal Chevrel 2023-04-11 2023-05-09 2023-06-06
113.0 102.11 Ryan VanderMeulen 2023-03-14 2023-04-11 2023-05-09
112.0 102.10 Dianna Smith 2023-02-14 2023-03-14 2023-04-11
111.0 102.9 Donal Meehan 2023-01-17 2023-02-14 2023-03-14
110.0 102.8 Pascal Chevrel 2022-12-13 2023-01-17 2023-02-14
109.0 102.7 Ryan VanderMeulen 2022-11-15 2022-12-13 2023-01-17
108.0 102.6 Dianna Smith 2022-10-18 2022-11-15 2022-12-13
107.0 102.5 Donal Meehan 2022-09-20 2022-10-18 2022-11-15
106.0 102.4 Pascal Chevrel 2022-08-23 2022-09-20 2022-10-18
105.0 102.3 Ryan VanderMeulen 2022-07-26 2022-08-23 2022-09-20
104.0 91.13 + 102.2 Dianna Smith 2022-06-28 2022-07-26 2022-08-23
103.0 91.12 + 102.1 Donal Meehan 2022-05-31 2022-06-28 2022-07-26
102.0 91.11 + 102.0 Pascal Chevrel 2022-05-03 2022-05-31 2022-06-28
101.0 91.10 Ryan VanderMeulen 2022-04-05 2022-05-03 2022-05-31
100.0 91.9 Dianna Smith 2022-03-08 2022-04-05 2022-05-03
99.0 91.8 Donal Meehan 2022-02-08 2022-03-08 2022-04-05
98.0 91.7 Pascal Chevrel 2022-01-11 2022-02-08 2022-03-08
97.0 91.6 Ryan VanderMeulen 2021-12-07 2022-01-11 2022-02-08
96.0 91.5 Dianna Smith 2021-11-02 2021-12-07 2022-01-11
95.0 91.4 Pascal Chevrel 2021-10-05 2021-11-02 2021-12-07
94.0 91.3 Ryan VanderMeulen 2021-09-07 2021-10-05 2021-11-02
93.0 78.15 + 91.2 Pascal Chevrel 2021-08-10 2021-09-07 2021-10-05
92.0 78.14 + 91.1 Ryan VanderMeulen 2021-07-13 2021-08-10 2021-09-07
91.0 78.13 + 91.0 Pascal Chevrel 2021-06-01 2021-07-13 2021-08-10
90.0 78.12 Julien Cristau 2021-04-19 2021-06-01 2021-07-13
89.0 78.11 Pascal Chevrel 2021-03-23 2021-04-20 2021-06-01
88.0 78.10 Ryan VanderMeulen 2021-02-23 2021-03-23 2021-04-19
87.0 78.9 Julien Cristau 2021-01-26 2021-02-23 2021-03-23
86.0 78.8 Pascal Chevrel 2020-12-15 2021-01-26 2021-02-23
85.0 78.7 Julien Cristau 2020-11-17 2020-12-15 2021-01-26
84.0 78.6 Ryan VanderMeulen 2020-10-20 2020-11-17 2020-12-15
83.0 78.5 Pascal Chevrel 2020-09-22 2020-10-20 2020-11-17
82.0 78.4 Julien Cristau 2020-08-25 2020-09-22 2020-10-20
81.0 78.3 Ryan VanderMeulen 2020-07-28 2020-08-25 2020-09-22
80.0 68.12 + 78.2 Julien Cristau 2020-06-30 2020-07-29 2020-08-25
79.0 68.11 + 78.1 Ryan VanderMeulen 2020-06-02 2020-06-30 2020-07-28
78.0 68.10 + 78.0 Julien Cristau 2020-05-05 2020-06-02 2020-06-30
77.0 68.9 Pascal Chevrel 2020-04-07 2020-05-05 2020-06-02
76.0 68.8 Ryan VanderMeulen 2020-03-10 2020-04-07 2020-05-05
75.0 68.7 Julien Cristau 2020-02-11 2020-03-10 2020-04-07
74.0 68.6 Pascal Chevrel 2020-01-07 2020-02-11 2020-03-10
73.0 68.5 Ryan VanderMeulen 2019-12-03 2020-01-07 2020-02-11
72.0 68.4 Julien Cristau 2019-10-22 2019-12-03 2020-01-07
71.0 68.3 Pascal Chevrel 2019-09-03 2019-10-22 2019-12-03
70.0 68.2 Liz Henry 2019-07-09 2019-09-03 2019-10-22
69.0 60.9 + 68.1 Ryan VanderMeulen 2019-05-21 2019-07-09 2019-09-03
68.0 60.8 + 68.0 Julien Cristau 2019-03-19 2019-05-22 2019-07-09
67.0 60.7 Pascal Chevrel 2019-01-29 2019-03-19 2019-05-21
66.0 60.6 Liz Henry 2018-12-11 2019-01-29 2019-03-19
65.0 60.5 Ryan VanderMeulen 2018-10-23 2018-12-11 2019-01-29
64.0 60.4 Julien Cristau 2018-09-05 2018-10-23 2018-12-11
63.0 60.3 Pascal Chevrel 2018-06-26 2018-09-05 2018-10-23
62.0 60.2 Liz Henry 2018-05-09 2018-06-26 2018-09-05
61.0 52.9 + 60.1 Ryan VanderMeulen 2018-03-13 2018-05-08 2018-06-26
60.0 52.8 + 60.0 Julien Cristau 2018-01-23 2018-03-14 2018-05-09
59.0 52.7 Liz Henry 2017-11-14 2018-01-24 2018-03-13
58.0 52.6 Gerry Chang 2017-09-28 2017-11-15 2018-01-23
57.0 52.5 Ritu Khotari 2017-08-08 2017-09-26 2017-11-14
56.0 52.4 Liz Henry 2017-06-13 2017-08-09 2017-09-28
55.0 52.3 Julien Cristau 2017-04-19 2017-06-14 2017-08-08
54.0 52.2 Gerry Chang 2017-01-24 2017-04-21 2017-06-13
53.0 45.8 + 52.1 Liz Henry 2016-11-15 2017-03-08 2017-04-19
52.0 45.7 + 52.0 Julien Cristau 2016-09-20 2017-01-25 2017-03-07
51.0 45.6 Gerry Chang 2016-08-02 2016-11-16 2017-01-24
50.0 45.5 Ritu Khotari 2016-06-07 2016-09-22 2016-11-15
49.0 45.4 Liz Henry 2016-04-26 2016-08-03 2016-09-20
48.0 45.3 Sylvestre Ledru 2016-03-08 2016-06-08 2016-08-02
47.0 45.2 Ritu Khotari 2016-01-26 2016-04-27 2016-06-07
46.0 38.8 + 45.1 Liz Henry 2015-12-15 2016-03-23 2016-04-26
45.0 38.7 + 45.0 Sylvestre Ledru 2015-11-03 2016-01-28 2016-03-08
44.0 38.6 Ritu Khotari 2015-09-22 2015-12-18 2016-01-26
43.0 38.5 Liz Henry 2015-08-11 2015-11-04 2015-12-15
42.0 38.4 Sylvestre Ledru 2015-07-02 2015-09-23 2015-11-03
41.0 38.3 Ritu Khotari 2015-05-12 2015-08-12 2015-09-22
40.0 38.2 Sylvestre Ledru 2015-03-31 2015-07-03 2015-08-11
39.0 31.8 + 38.1 Liz Henry 2015-02-24 2015-05-28 2015-07-02
38.0 31.7 + 38.0 Sylvestre Ledru 2015-01-13 2015-04-02 2015-05-12
37.0 31.6 Lawrence Mandel 2014-12-01 2015-02-25 2015-03-31
36.0 31.5 Sylvestre Ledru 2014-10-14 2015-01-16 2015-02-24
35.0 31.4 Lukas Blakk 2014-09-02 2014-12-04 2015-01-13
34.0 31.3 Lukas Blakk 2014-07-22 2014-10-16 2014-12-01
33.0 31.2 Sylvestre Ledru 2014-06-10 2014-09-04 2014-10-14
32.0 24.8 + 31.1 Lawrence Mandel 2014-04-29 2014-07-24 2014-09-02
31.0 24.7 + 31.0 Sylvestre Ledru 2014-03-18 2014-06-12 2014-07-22
30.0 24.6 Lukas Blakk 2014-02-04 2014-05-01 2014-06-10
29.0 24.5 Sylvestre Ledru 2013-12-10 2014-03-20 2014-04-29
28.0 24.4 Lukas Blakk 2013-10-29 2014-02-06 2014-03-18
27.0 24.3 Bhavana Bajaj 2013-09-17 2013-12-12 2014-02-04
26.0 24.2 Lukas Blakk 2013-08-06 2013-10-31 2013-12-10
25.0 17.8 + 24.1 Alex Keybl 2013-06-25 2013-09-18 2013-10-29
24.0 17.7 + 24.0 Bhavana Bajaj 2013-05-14 2013-08-09 2013-09-17
23.0 17.6 Lukas Blakk 2013-04-02 2013-06-27 2013-08-06
22.0 17.5 Alex Keybl 2013-02-19 2013-05-16 2013-06-25
21.0 17.4 Bhavana Bajaj 2013-01-08 2013-04-04 2013-05-14
20.0 17.3 Lukas Blakk 2012-11-20 2013-02-22 2013-04-02
19.0 17.2 Alex Keybl 2012-10-09 2013-01-10 2013-02-19
18.0 10.8 + 17.1 Bhavana Bajaj 2012-08-28 2012-11-26 2013-01-08
17.0 10.7 + 17.0 Lukas Blakk 2012-07-17 2012-10-11 2012-11-20
16.0 10.6 Alex Keybl 2012-06-05 2012-08-30 2012-10-09
15.0 10.5 Alex Keybl 2012-04-24 2012-07-19 2012-08-28
14.0 10.4 Alex Keybl 2012-03-13 2012-06-07 2012-07-17
13.0 10.3 Alex Keybl 2012-01-31 2012-04-26 2012-06-05
12.0 10.2 Alex Keybl 2011-12-20 2012-03-16 2012-04-24
11.0 10.1 Alex Keybl 2011-11-08 2012-02-03 2012-03-13
10.0 10.0 Alex Keybl 2011-09-27 2011-12-22 2012-01-31
9.0 Christian Legnitto 2011-08-16 2011-11-10 2011-12-20
8.0 Christian Legnitto 2011-07-05 2011-09-29 2011-11-08
7.0 Christian Legnitto 2011-05-24 2011-08-18 2011-09-27
6.0 Christian Legnitto 2011-04-12 2011-07-08 2011-08-16
5.0 Christian Legnitto 2011-05-20 2011-06-21
4.0 Mike Beltzner 2010-07-06 2011-03-22
3.6 Mike Beltzner 2009-10-30 2010-01-21
3.5 Mike Beltzner 2009-04-27 2009-06-30
3.0 Mike Beltzner 2007-11-19 2008-06-17
2.0 Basil Hashem 2006-07-12 2006-10-24
1.5 Basil Hashem 2005-11-01 2005-11-29
1.0 Basil Hashem 2004-10-27 2004-11-09