Thank you for reaching out to the Microsoft Q&A platform.
I must clarify that the link you provided is not official Microsoft documentation.
Regarding your question, AKS supports upgrading to the latest available version of Kubernetes. Once the latest version of Kubernetes is available in AKS, you can upgrade your cluster using the Azure portal, Azure CLI, or Azure PowerShell. During the upgrade process, nodes are carefully cordoned and drained to minimize disruption to running applications.
However, it is important to note that not all Kubernetes features are available in AKS. Some features may be in preview or not yet supported. You can refer to the Supported Kubernetes versions in Azure Kubernetes Service documentation for more information on the supported Kubernetes versions in AKS.
If you have any specific questions about the features mentioned in the link you provided, please let me know and I will do my best to assist you.
If this does answer your question, please accept it as the answer as a token of appreciation.