FreeBSD 15.0 is here: what changed in the new major release

FreeBSD 15.0-RELEASE arrived on December 2, 2025 as the first release of the stable/15 branch. This article updates an earlier preview: some features then described as imminent were speculative or already existed. The official announcement and release notes are the references for confirmed changes.

Base system packages: pkgbase

A major addition is the option to install and maintain the FreeBSD base system with pkg. During installation, bsdinstall offers traditional distribution sets or packaged base. Traditional installs continue to use freebsd-update throughout the FreeBSD 15 branch; pkgbase is a technology preview in 15.0 and is the default for published VM and public-cloud images. Check the official upgrade instructions before changing installation methods.

File monitoring and development tools

FreeBSD now includes native inotify support, which can simplify porting software that watches files. The release artifacts were generated without requiring root privileges. Development of the FreeBSD source tree is hosted in Git; it did not newly move to GitLab for this release.

Storage and cryptography

The 15.0 announcement lists OpenZFS 2.4.0-rc4, OpenSSL 3.5.4 and OpenSSH 10.0p2. Check release notes and errata before relying on a specific version or planning an upgrade.

Performance, networking and virtualisation

FreeBSD continues to improve its kernel, drivers and bhyve. However, Linux io_uring is not a confirmed new FreeBSD 15.0 feature in the official notes; FreeBSD provides its own asynchronous mechanisms such as kqueue. WireGuard support through if_wg already existed in earlier FreeBSD releases, so describing it as a new 15.0 integration would be misleading. Nor do the official highlights establish a new openbsdmerge utility replacing etcupdate.

Who should look at 15.0?

Administrators evaluating a packaged base system, developers porting file-watching applications, and users of ZFS, virtualization or modern security libraries can review the changes. Assess supported hardware, backup and upgrade paths for each deployment.

Where to read more

See the official FreeBSD 15.0 announcement at https://www.freebsd.org/releases/15.0R/announce/ and the release notes at https://www.freebsd.org/releases/15.0R/relnotes/. The 15.0 point release and the broader 15 series have different support dates; check the current security information before installing.