FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
This article describes how to face product vulnerabilities.

Technology vulnerabilities are discovered daily and in some cases administrative action is needed.
Fortinet strives to keep stakeholders updated and informed to aid in the threat assessment process.

Several tools are available:

1) PSIRT advisories:
These advisories contain cutting-edge information on the latest and past threats as well as pertinent mitigation information.

2) Customer support bulletins (CSB's):
Significant product issues that customers are aware.

3) Firmware update notifications:
Once firmware is available the below RSS feed is updated. It is the fastest way to know when new firmware is released.

In order to receive automatic updates please subscribe to the RSS feeds above. 
RSS feeds can be added to an RSS reader such as Microsoft Outlook.