Fedora Linux 45 Beta arrived Tuesday, September 15, giving users a chance to test next release’s changes before it ships to everyone. The beta is available now for Workstation, KDE Plasma, Server, Cloud, and IoT editions, plus the project’s various Atomic Desktops, Spins, and Labs with the exception of the MiracleWM, Budgie-Atomic, and Sway-Atomic images, which didn’t make the beta cut.
The headline change is one most users won’t notice until it stops something from installing: Fedora 45 now requires valid package signatures by default. Previously, an unsigned package could slip through; now the system blocks it unless you explicitly override the check. It’s a quiet hardening move, but a meaningful one for anyone pulling packages from third-party repos.
What’s new
- Signed packages enforced. DNF now rejects unsigned packages out of the box, closing a gap that let unverified software install without a warning.
- kmscon replaces the old console. The legacy in-kernel console gives way to kmscon, bringing smoother rendering and better Unicode and font support in virtual terminals.
- Unified secrets management. GNOME Keyring and KWallet are being replaced by oo7 as the standard secrets backend across desktop environments, one less fragmented piece of the stack.
- Fresh toolchains. Python 3.15, Go 1.27, GCC 16.2, and glibc 2.44 all land in this release, alongside Podman 6, Pandas 3, and updated MySQL and MariaDB builds.
- Installer improvements. Anaconda gains an initial WebUI flow for Atomic Desktops and native support for partitioning Stratis filesystems.
- CoreOS gets leaner. Fedora CoreOS now enables systemd-oomd and zram swap by default, aligning it with other Fedora variants’ memory-management defaults.
None of this is a dramatic overhaul, it’s the usual mid-cycle mix of security tightening, desktop plumbing, and version bumps. But the signature enforcement and secrets consolidation are the kind of changes that quietly reduce the number of ways a Fedora system can be misconfigured, which matters more than a flashy feature would.
Testers can grab images from Fedora’s standard download pages or upgrade an existing install with dnf system-upgrade. As with any beta, back up first, the point of this release is to surface the bugs before they reach the stable channel.
