This document provides a summary of new features in AlienVault USM v4.5, including: - A new look and feel with improved user interface. - A plugin suggestion engine to help users identify and enable plugins for assets. - A new errors and warnings dashboard to monitor system health. - Improvements to the first time wizard for easier log management configuration. - New built-in status monitors to check for failure conditions. - Alarm tag forwarding in federated environments to identify the source of alarms. The document also describes a new USM health check service to optimize USM deployments.