Admins can now assign Group Admins to manage membership for any custom groups.
Previously, only Admins could manage membership for custom groups. Now, Admins can grant any number of group members the Group Admin privileges to add new users or remove existing users. Group Admins will be able to see all users within an org, but are not able to modify any aspect of their group beyond membership (e.g. app and resource permissions).
Fixed "last active" date on the Users page under Settings
Check out this guide to see the on-prem versions and their release notes.