This FortiOS Handbook chapter contains the following sections.

What's New in FortiOS 5.4.6 provides a brief description of features that were added to FortiOS 5.4.6.

What's New in FortiOS 5.4.4 provides a brief description of features that were added to FortiOS 5.4.4.

What's New in FortiOS 5.4.3 provides a brief description of features that were added to FortiOS 5.4.3.

What's New in FortiOS 5.4.2 provides a brief description of features that were added to FortiOS 5.4.2.

note icon There is no What's New in FortiOS 5.4.5 because there were no new features added in that version.

The following sections highlight some of the higher profile new FortiOS 5.4 features:

All of the other new features in FortiOS 5.4 are organized alphabetically by subject: