GKE Updates: New Versions and Deprecations Across Channels

(2026-R21) Security updates This release includes new GKE versions that use updated Container-Optimized OS images. These updated images are cumulative, incorporating security fixes from all Container-Optimized OS versions released since the previous GKE release. To identify the specific vulnerabilities that were resolved in each updated Container-Optimized OS image, see the Security release notes for that image. The following table includes links to the release notes for each updated Container-Optimized OS image: GKE version Container-Optimized OS version Details 1.30.14-gke.2558000 cos-117-18

(2026-R21) Version updates GKE cluster versions have been updated. New versions available for upgrades and new clusters. The following versions are now available for new GKE clusters, and for manual control plane upgrades and node upgrades for existing clusters. For more information about versioning and upgrades, see GKE versioning and support and About GKE cluster upgrades . Note : Your clusters might not have these versions available. Rollouts are already in progress when we publish the release notes, and can take multiple days to complete across all Google Cloud zones. Version 1.35.5-gke.10

(2026-R21) Version updates Note : Your clusters might not have these versions available. Rollouts are already in progress when we publish the release notes, and can take multiple days to complete across all Google Cloud zones. Version 1.34.6-gke.1307000 is now the default version for cluster creation in the Stable channel. The following versions are now available in the Stable channel: 1.33.11-gke.1074000 1.34.7-gke.1055000 The following versions are no longer available in the Stable channel: 1.33.10-gke.1115000 is deprecated in the Stable channel. This version will be removed in 90 days, or a

(2026-R21) Version updates Note : Your clusters might not have these versions available. Rollouts are already in progress when we publish the release notes, and can take multiple days to complete across all Google Cloud zones. Version 1.35.3-gke.1389002 is now the default version for cluster creation in the Regular channel. The following versions are now available in the Regular channel: 1.33.11-gke.1197000 1.34.7-gke.1499000 1.35.3-gke.2190000 The following versions are no longer available in the Regular channel: 1.33.11-gke.1013000 1.34.6-gke.1307000 1.35.3-gke.1389000 Clusters in this chann

(2026-R21) Version updates Note : Your clusters might not have these versions available. Rollouts are already in progress when we publish the release notes, and can take multiple days to complete across all Google Cloud zones. Version 1.35.5-gke.1000000 is now the default version for cluster creation in the Rapid channel. The following versions are now available in the Rapid channel: 1.33.12-gke.1059000 1.34.8-gke.1126000 1.35.5-gke.1057000 1.36.0-gke.2459000 The following versions are no longer available in the Rapid channel: 1.33.11-gke.1074000 1.33.11-gke.1197000 1.34.7-gke.1055000 1.34.7-g

(2026-R21) Version updates Note : Your clusters might not have these versions available. Rollouts are already in progress when we publish the release notes, and can take multiple days to complete across all Google Cloud zones. Version 1.35.3-gke.1389002 is now the default version for cluster creation. The following versions are now available: 1.33.12-gke.1059000 1.34.8-gke.1126000 1.35.5-gke.1057000 The following node versions are now available: 1.30.14-gke.2558000 1.31.14-gke.1967000 1.32.13-gke.1592000 1.33.12-gke.1059000 1.34.8-gke.1126000 1.35.5-gke.1057000 The following versions are no lo

(2026-R21) Version updates Note : Your clusters might not have these versions available. Rollouts are already in progress when we publish the release notes, and can take multiple days to complete across all Google Cloud zones. Version 1.35.3-gke.1389002 is now the default version for cluster creation in the Extended channel. The following versions are now available in the Extended channel: 1.30.14-gke.2441000 1.30.14-gke.2558000 1.31.14-gke.1850000 1.31.14-gke.1967000 1.32.13-gke.1449000 1.32.13-gke.1592000 1.33.11-gke.1197000 1.34.7-gke.1499000 1.35.3-gke.2190000 The following versions are no