The following table provides a summary of Container-Optimized OS releases available on Compute Engine:
Active Milestones
| OS version | Image project | x86 image family | Arm image family | Built by | End of support | Release notes |
|---|---|---|---|---|---|---|
| COS 121 DEV | cos-cloud |
cos-dev |
cos-arm64-dev |
TBD | dev | |
| COS 117 LTS | cos-cloud |
cos-117-lts |
cos-arm64-117-lts |
Sept 2026 | milestone 117 | |
| COS 113 LTS | cos-cloud |
cos-113-lts |
cos-arm64-113-lts |
March 2026 | milestone 113 | |
| COS 109 LTS | cos-cloud |
cos-109-lts |
cos-arm64-109-lts |
Sept 2025 | milestone 109 | |
| COS 105 LTS | cos-cloud |
cos-105-lts |
cos-arm64-105-lts |
March 2025 | milestone 105 | |
Deprecated Milestones
| OS version | Image project | x86 image family | Arm image family | Built by | Deprecation date | Release notes |
|---|---|---|---|---|---|---|
| COS 101 LTS | cos-cloud |
cos-101-lts |
N/A |
Oct 2024 | milestone 101 | |
| COS 97 LTS | cos-cloud |
cos-97-lts |
N/A |
April 2024 | milestone 97 | |
| COS 93 LTS | cos-cloud |
cos-93-lts |
N/A |
October 2023 | milestone 93 | |
| COS 89 LTS | cos-cloud |
cos-89-lts |
N/A |
March 2023 | milestone 89 | |
| COS 85 LTS | cos-cloud |
cos-85-lts |
N/A |
September 2022 | milestone 85 | |
| COS 81 LTS | cos-cloud |
cos-81-lts |
N/A |
September 20211 | milestone 81 | |
| COS 77 LTS | cos-cloud |
cos-77-lts |
N/A |
April 20211 | milestone 77 | |
| COS 73 LTS | cos-cloud |
cos-73-lts |
N/A |
June 2020 | milestone 73 | |
| COS 69 LTS | cos-cloud |
cos-69-lts |
N/A |
December 2019 | milestone 69 |
-
COS 77 LTS and COS 81 LTS, when bundled with GKE, have slightly longer support durations. GKE users should consult the GKE release schedule for details. ↩
Development Release Notes
For release notes related to the milestone under development, see the
Development Release Notes page.
For release notes related to cos-dev before M93, see the
Legacy Release Notes
page.
You can see the latest product updates for all of Google Cloud on the Google Cloud page, browse and filter all release notes in the Google Cloud console, or programmatically access release notes in BigQuery.
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