Currently, we support 3 K8s versions, such as v1.23, v1.24, and v1.25.

However, v1.23 has already reached EoL, and v1.24 will reach EoL on 2023-07-28.

So we can support v1.24-v1.26 or v1.25-v1.27 in the next training operator release.

ref: https://kubernetes.io/releases/

WDYT? @kubeflow/wg-training-leads @zw0610 @kuizhiqing