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 milestone dates

Future release cycle dates are tentative dates and may change.

Milestone	4.1	4.2	4.3
Planning
Review target milestones	2025/01/31
Release and Timeline Announcement	2025/02/07	2025/06/21	2025/07/17
Feature Freeze (RC1)	2025/02/14	2025/06/27	2025/07/24
2nd Release Candidate (RC2)	2025/02/21	2025/07/04	2025/10/31
Hard Freeze (RC3)	2025/02/28	2025/07/11	2025/11/07
Release	2025/03/07	2025/07/18	2025/11/14
End Of Life	v4.3

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 - LTS	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

Future Releases

Release Version	Release Date	Support Level	Maintainer
4.2	Jul 2025	8 Month
4.3	Nov 2025	8 Month
4.4	Mar 2026	8 Month
4.5	Jul 2026	8 Month
4.6	Nov 2026	8 Month
4.7	Mar 2027	LTS

• Dates are tenative and subject to change.

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