At October 1 VMware released NSX for vSphere 6.1.5.
Changes introduced in NSX vSphere 6.1.5:
Controller connectivity status: NSX Manager user interface is enhanced to display the connectivity status between NSX controllers in the controller cluster. This allows you to view connectivity differences between nodes. For example, in a cluster with three controllers, A, B, and C, the control status would allow you to detect a partial cluster partition where A is connected to B and C, but B and C cannot view each other.
Release notes are here.