Release Management

Please see https://docs.zephyrproject.org/latest/project/release_process.html#release-milestones and https://docs.zephyrproject.org/latest/releases/ for the definition of the release process and release checkpoints and milestones.

Release Activity

Release Version	Release Date	Current Version	Support Level	Maintainer
4.1	Mar 2025		Development	Benjamin / Fabio
4.0	Nov 2024	4.0.0	8 Months (7/2025)	Dan / Mahesh
3.7	Jul 2024	3.7.1	LTS (7/2029)	Anas / Alberto
3.6	Feb 2024	3.6.0	EOL	Brix / Maureen
3.5	Oct 2023	3.5.0	EOL	Johan / Fabio
3.4	Jun 2023	3.4.0	EOL	Anas / Josh
3.3	Feb 2023	3.3.0	EOL	Stephanos / Lauren
3.2	Sep 2022	3.2.0	EOL	Fabio / Mahesh
3.1	Jun 2022	3.1.0	EOL	Carles / Marti
3.0	Feb 2022	3.0.0	EOL	Dan
2.7	Oct 2021	2.7.6	EOL	Chris / Anas
2.6	Jun 2021	2.6.0	EOL	Kumar
2.5	Feb 2021	2.5.0	EOL	Anas
2.4	Sep 2020	2.4.0	EOL	Maureen
2.3	Jun 2020	2.3.0	EOL	Carles
2.2	Feb 2020	2.2.0	EOL	Johan
2.1	Dec 2019	2.1.0	EOL	David
2.0	Sep 2019	2.0.0	EOL	Ioannis
1.14	Apr 2019	1.14.3	EOL - LTS	Kumar
1.13	Sep 2018	1.13.0	EOL	Anas

4.1 Release milestone dates

Milestone	3.7 (LTS)	4.0	4.1	4.2	4.3
Planning	2024/01/12	2024/06/26
Review target milestones	2024/05/10	2024/10/11	2025/01/31
Release and Timeline Announcement	2024/05/31	2024/10/18	2025/02/07
Feature Freeze (RC1)	2024/06/14	2024/10/25	2025/02/14
2nd Release Candidate (RC2)	2024/06/28	2024/11/01	2025/02/21
Hard Freeze (RC3)	2024/07/12	2024/11/08	2025/02/28
Release	2024/07/26	2024/11/15	2025/03/07	2025/07/18	2025/11/14
End Of Life	2027/01/26	2025/07/18

Note, as per the TSC F2F of 2019/10/31, releases after and including 2.4 have a 4 month cadence.

Release management meetings

The release management team meets weekly to triage bugs and assess release readiness following the below agenda:

• Triage bugs
  • Bugs without priority
  • Unassigned bugs
  • Issues without category
• Review backports
• Review release progress