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NixOS 25.11 Released with GNOME 49, COSMIC Beta, and FirewallD Support
Powered by the long-term supported Linux 6.12 LTS kernel series, NixOS 25.11 (codename Xantusia) is here six months after NixOS 25.05 to introduce the latest and greatest GNOME 49 desktop environment series, as well as support for System76’s Rust-based COSMIC Beta desktop environment.
NixOS 25.11 also adds support for the FirewallD firewall, which can be configured as a standalone service or as a backend to the existing networking.firewall options, support for the rEFInd graphical boot manager for UEFI systems, and Secure Boot support for the Limine bootloader.
Linuxiac:
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NixOS 25.11 "Xantusia" Ships with GNOME 49, Linux Kernel 6.17
Six months after the previous 25.05 “Warbler” release, the new stable version, NixOS 25.11 “Xantusia,” is officially here. Targeted at advanced users and developers, NixOS bets on an immutable design and an atomic update model, emphasizing reproducibility and reliability with the Nix package manager.
Nixpkgs adds 7,002 new packages and updates 25,252 existing entries. A cleanup effort removed 6,338 outdated packages to keep the repository manageable and secure. On the NixOS side, the release introduces 107 new modules, adds 1,778 configuration options, and removes older, unused components.
LWN and more:
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NixOS 25.11 released
Version 25.11 of the NixOS distribution has been released. "
The 25.11 release was made possible due to the efforts of 2742 contributors, who authored 59430 commits since the previous release
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NixOS 25.11 released
Hey everyone, we are jopejoe1 and Leona Maroni, the release managers of the newest release of NixOS. We are very proud to announce the public availability of NixOS 25.11 "Xantusia".
This release will receive bugfixes and security updates for seven months (up until 2026-06-30). The old release 25.05 "Warbler" is now officially deprecated and will reach its end-of-life and stop receiving security updates after 2025-12-31.