1.35 version information and update actions
Review information about version 1.35 of IBM Cloud® Kubernetes Service. For more information about Kubernetes project version 1.35, see the Kubernetes change log.
IBM Cloud Kubernetes Service is a Certified Kubernetes product for version 1.35 under the CNCF Kubernetes Software Conformance Certification program. Kubernetes® is a registered trademark of The Linux Foundation in the United States and other countries, and is used pursuant to a license from The Linux Foundation.
Release timeline
The following table includes the expected release timeline for version 1.35 of IBM Cloud® Kubernetes Service. You can use this information for planning purposes, such as to estimate the general time that the version might become unsupported.
Dates that are marked with a dagger (†) are tentative and subject to change.
| Version | Supported? | Release date | Unsupported date |
|---|---|---|---|
| 1.35 | Yes | 05 March 2026 | 28 April 2027 † |
Preparing to update
For a complete list of changes that might impact your deployed apps when you update your cluster, review the community Kubernetes change log and IBM version change log for version 1.35. You can also review the Kubernetes helpful warnings.
Cluster autoscaler does not yet support version 1.35. Do not upgrade your cluster to version 1.35 if your cluster uses cluster autoscaler.
Istio add-on version 1.26 is not supported for IBM Cloud Kubernetes Service version 1.35 because the Istio add-on does not support Istio 1.29. Do not update to IBM Cloud Kubernetes Service version 1.35 if you use the add-on in your cluster. As an alternative, you can migrate from the Istio add-on to community Istio.