If you want specific releases to be always available, you can add a `versions` parameter, containing an array of version strings under the `spec` of your ClusterStack:

```yaml
/// clusterstack.yaml
apiVersion: clusterstack.x-k8s.io/v1alpha1
kind: ClusterStack
metadata:
  name: hetzner-apalla-1-35
spec:
  provider: hetzner
  name: apalla
  kubernetesVersion: '1.35'
  channel: stable
  autoSubscribe: true
  versions: // [!code ++]
    - v1 // [!code ++]
    - v2 // [!code ++]
  providerRef:
    name: hetzner-apalla-1-35
    kind: HetznerClusterStackReleaseTemplate
    apiVersion: infrastructure.clusterstack.x-k8s.io/v1alpha1
---
apiVersion: infrastructure.clusterstack.x-k8s.io/v1alpha1
kind: HetznerClusterStackReleaseTemplate
metadata:
  name: hetzner-apalla-1-35
spec:
  template:
    spec:
      nodeImages:
        - controlplaneamd64hcloud
        - workeramd64hcloud
```

Using this manifest, you'll have the `v1` and `v2` **plus** the latest release of the Cluster Stack for Kubernetes 1.35. If you don't want the latest version to always be available, you can change the value of `spec.autoSubscribe` from `true` to `false`:

```yaml
/// clusterstack.yaml
apiVersion: clusterstack.x-k8s.io/v1alpha1
kind: ClusterStack
metadata:
  name: hetzner-apalla-1-35
spec:
  provider: hetzner
  name: apalla
  kubernetesVersion: '1.35'
  channel: stable
  autoSubscribe: true // [!code --]
  autoSubscribe: false // [!code ++]
  versions:
    - v1
    - v2
  providerRef:
    name: hetzner-apalla-1-35
    kind: HetznerClusterStackReleaseTemplate
    apiVersion: infrastructure.clusterstack.x-k8s.io/v1alpha1
---
apiVersion: infrastructure.clusterstack.x-k8s.io/v1alpha1
kind: HetznerClusterStackReleaseTemplate
metadata:
  name: hetzner-apalla-1-35
spec:
  template:
    spec:
      nodeImages:
        - controlplaneamd64hcloud
        - workeramd64hcloud
```

Note that if you are not auto-subscribed to the latest version, you must specify the versions you want, otherwise there will be no Cluster Stack Release available for your clusters.