Some of the highlights:

OpenSSH has been updated to version 9.5p1.

OpenSSL has been updated to version 3.0.12, a major upgrade from OpenSSL 1.1.1t in FreeBSD 13.2-RELEASE.

The bhyve hypervisor now supports TPM and GPU passthrough.

FreeBSD supports up to 1024 cores on the amd64 and arm64 platforms.

ZFS has been upgraded to OpenZFS release 2.2, providing significant performance improvements.

It is now possible to perform background filesystem checks on UFS file systems running with journaled soft updates.

Experimental ZFS images are now available for AWS and Azure.

The default congestion control mechanism for TCP is now CUBIC.

And much more…​

For a complete list of new features and known problems, please see the online release notes and errata list, available at:

https://www.freebsd.org/releases/14.0R/relnotes/