Improvements mainly due to optimized SSL inspection flow.
The most frequent mistake organizations make is assuming they can upgrade from FortiOS 6.4 to 7.4 directly.
The most noteworthy additions to the FortiGate operating system include:
Never assume the highest version number is right for your specific hardware (e.g., FortiGate 60E cannot run 7.6.0; it maxes out at 7.0.x).
To tailor advice for your network, tell me your , your current firmware version , and any specific features you want to unlock. I can outline the exact upgrade path and highlight any known stability issues for your setup. Share public link
Fortinet actively maintains multiple firmware branches simultaneously. Each branch serves different enterprise needs based on maturity, stability, and feature requirements. FortiOS 7.6 (The Feature-Rich Branch)
Improved, built-in ZTNA capabilities that allow for more granular, identity-based access control without needing separate appliances.
The absolute as of this writing is FortiOS 7.6.0 (GA). However, "latest" is ambiguous:
How to manually download firmware of Fort... - the Fortinet Community!