Firefox Release Calendar

Upcoming releases
2024
Quarter Version Matching ESR Release Owner Nightly starts Soft code freeze Beta starts Release day
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
127.0 115.12 Pascal Chevrel 2024-04-16 2024-05-14 2024-06-11
126.0 115.11 Donal Meehan 2024-03-19 2024-04-16 2024-05-14
125.0 115.10 Ryan VanderMeulen 2024-02-20 2024-03-19 2024-04-16
124.0 115.9 Dianna Smith 2024-01-23 2024-02-20 2024-03-19
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