Cloud Composer API Changes — Google Cloud RadarReal-time pre-release intelligence and changelog for Google Cloud Composer. Tracked from Google Discovery Service.https://google-cloud-radar.com/services/cloud-composer/atom.xml2026-11-07T00:00:00ZGoogle Cloud Radarhttps://github.com/max-ostapenko/google-cloud-radarComposer Adds X-Extra Large Size & Scheduled Hibernationhttps://google-cloud-radar.com/changes/2026-11-07-composer-v1beta12026-11-07T00:00:00Z2026-11-07T00:00:00ZCloud Composer environments can now be provisioned in an X-Extra Large size. Additionally, `DEVELOPMENT` mode environments can configure scheduled hibernation and resumption, enabling cost savings and automated management.⚠️ [BREAKING] Hibernate/Resume Composer Environments, New X-Extra Large Sizehttps://google-cloud-radar.com/changes/2026-11-07-composer-v12026-11-07T00:00:00Z2026-11-07T00:00:00ZCloud Composer now allows you to hibernate and resume environments, enabling significant cost savings for development and intermittent workloads. Additionally, a new X-Extra Large environment size is available for more demanding use cases.ImageVersion now indicates Development Mode supporthttps://google-cloud-radar.com/changes/2026-10-24-composer-v1beta12026-10-24T00:00:00Z2026-10-24T00:00:00ZThe `ImageVersion` schema in Cloud Composer now includes a `devModeSupported` boolean property. This allows developers to programmatically check if a specific image version supports creating environments in `DEVELOPMENT` mode.Composer ImageVersion now indicates dev mode supporthttps://google-cloud-radar.com/changes/2026-10-24-composer-v12026-10-24T00:00:00Z2026-10-24T00:00:00ZThe `ImageVersion` schema in Cloud Composer now includes a `devModeSupported` boolean property. This new field indicates whether a specific image version can be used to create environments in `DEVELOPMENT` mode.⚠️ [BREAKING] Composer: Environment Rollback Targets Exposedhttps://google-cloud-radar.com/changes/2026-10-15-composer-v1beta12026-10-15T00:00:00Z2026-10-15T00:00:00ZCloud Composer environments now expose `imageVersionRollbackTargets` within `SoftwareConfig`, providing visibility into which image versions an environment can be rolled back to. These new fields are output-only; attempting to set them will now result in an error.⚠️ [BREAKING] Composer Environment Rollback Targetshttps://google-cloud-radar.com/changes/2026-10-15-composer-v12026-10-15T00:00:00Z2026-10-15T00:00:00ZCloud Composer environments now expose `imageVersionRollbackTargets` in `SoftwareConfig`, providing insights into available rollback points and their last active usage.