Technical Preview for System Center Configuration Manager, version 1511, included the ability to create a collection where all devices in the collection make up a server group. Then, you could configure the server group settings to use when you deploy software updates to the server group, control the percentage of computers that are updated at any given time, and configure pre-deployment and post-deployment PowerShell scripts to run custom actions.

Technical Preview for System Center Configuration Manager, version 1605, adds the ability to update the computers in the server group in a specified order that you define, adds enhanced monitoring to view the status for the computers in the server group, and provides the ability to clear the deployment locks that is useful when clients have failed to install the software updates and are preventing other clients from installing their software updates.

Reference: https://technet.microsoft.com/en-us/library/mt706220.aspx