We are happy to announce that the Patch Orchestration Application (POA) is now available to be deployed to your clusters. POA is a Service Fabric application that allows you to automate OS patching of the VMs/VM instances/nodes of a Service Fabric cluster on Azure or on-premise. The details on how to download and use this applications are at https://docs.microsoft.com/azure/service-fabric/service-fabric-patch-orchestration-application.
The POA downloads OS patches and orchestrates their deployment to all nodes in the cluster without downtime. While applying updates, POA monitors the health of the cluster and if at any time the health policies for the cluster are not met, the patch rollout is stopped.
Status update on the VMSS provided image-based automatic patching capability in Azure
This capability is still being worked on. Once available, a SF customer can modify the VMSS definition so that the platform provided OS image is automatically updated when Azure publishes a new image for a given OS family and version. More details will be provided by Q4CY2017.