About FortiWLC 8.6.4
FortiWLC release 8.6.4 delivers a DFS enhancement and important bug fixes, see sections What’s New and Fixed Issues.
Network Security 
Network Security
NOC & SOC Management
Enterprise Networking
Business Communications
Zero Trust Access 
Cloud Security 
Hybrid Cloud Security
Cloud Native Protection
Web Application / API Protection
SAAS Security
Security Operations 
SOC Platform
Advanced Threat Protection
Endpoint Security