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Release Management · zephyrproject-rtos/zephyr Wiki · GitHub
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Release Management
Anas Nashif edited this page Jul 11, 2025
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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.
Future release cycle dates are tentative dates and may change.
| Milestone | 4.2 | 4.3 |
|---|---|---|
| Planning | ||
| Review target milestones | ||
| Release and Timeline Announcement | 2025/06/21 | 2025/10/17 |
| Feature Freeze (RC1) | 2025/06/27 | 2025/10/24 |
| 2nd Release Candidate (RC2) | 2025/07/08 | 2025/10/31 |
| Hard Freeze (RC3) | 2025/07/11 | 2025/11/07 |
| Release | 2025/07/18 | 2025/11/14 |
| End Of Life | 2026/03/18 |
| Release Version | Release Date | Current Version | Support Level | Maintainer |
|---|---|---|---|---|
| 4.4 | Mar 2026 | Planned | ||
| 4.3 | Nov 2025 | Planned | Johan / Chris | |
| 4.2 | Jul 2025 | Development | Dan K. / Daniel D. | |
| 4.1 | Mar 2025 | 4.1.0 | 8 Months (11/2025) | 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 |
| 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.
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
© 2018-2023 Zephyr® Project. Zephyr is a trademark of the Linux Foundation.
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