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Bluefin LTS

Achillobator giganticus

Bluefin LTS Achillobator character artwork
Jacob Schnurr · Project Bluefin artwork
Gold Achillobator silhouette beside a human figure on a scale grid, as used in the upstream README
Bluefin LTS README · Original silhouette
Bluefin LTS desktop captured by the latest testsuite smoke run
Latest testsuite smoke capture

Upstream README · Artwork source · Artwork license · QA verification run

NOTE THIS IS STAYING IN UBLUE

Build Bluefin LTS OpenSSF Best Practices Bluefin LTS on ArtifactHub Installs Ask DeepWiki

Larger, more lethal Bluefin. Built on CentOS Stream 10 for longer support windows, conservative upgrades, and production-focused workstations.

Latest Release​

Bluefin LTS latest release

Images​

Full catalog at docs.projectbluefin.io/images →

Bluefin LTS​

Long-term support Bluefin stream built on CentOS Stream 10.

# LTS — recommended
sudo bootc switch ghcr.io/projectbluefin/bluefin-lts:stable --enforce-container-sigpolicy
# LTS — NVIDIA
sudo bootc switch ghcr.io/projectbluefin/bluefin-lts-nvidia:stable --enforce-container-sigpolicy

Migrating from ublue-os/bluefin-lts​

Users on the previous ghcr.io/ublue-os/bluefin*:lts images will be migrated automatically via a systemd service. No action required — your machine will switch on its next reboot after pulling the update.

Old image (ublue-os)New image (projectbluefin)
bluefin:ltsbluefin-lts:stable
bluefin:lts-hwe (legacy tag)bluefin-lts:stable
bluefin-dx:ltsbluefin-lts:stable + run ujust devmode after reboot
bluefin-dx:lts-hwe (legacy tag)bluefin-lts:stable + run ujust devmode after reboot
bluefin-gdx:ltsbluefin-lts-nvidia:stable + run ujust devmode after reboot
arm64 variantsNo automatic migration — reinstall from new image

To migrate manually before the automatic migration ships:

sudo bootc switch ghcr.io/projectbluefin/bluefin-lts:stable --enforce-container-sigpolicy

Getting Started​

Visit projectbluefin.io to download Bluefin LTS, or check the LTS Documentation for installation and upgrade instructions.

Rebasing between the Bluefin (Fedora) and Bluefin LTS (CentOS) image families is not supported. Plan migrations as fresh installs or supported upgrade paths.

Community​

Contributing​

See the Contributing Guide for how to get involved. All participants are expected to follow the Universal Blue Community Guidelines.

Report security vulnerabilities via SECURITY.md.

License​

Apache License 2.0 — see LICENSE.

Bluefin LTS incorporates CentOS Stream, GNOME, Universal Blue, and various CNCF projects, each under their respective licenses. Report security vulnerabilities via SECURITY.md.

License​

Apache License 2.0 — see LICENSE.

Uranium incorporates CentOS Stream, GNOME, Universal Blue, and various CNCF projects, each under their respective licenses.

Downloads & Image Versions​

LTS Testing ISO

Current automated testing build for verification and hardware testing.

bluefin-lts-hwe-testing-aarch64.iso
AMDAMDIntelIntel
📥 Download ISO🧲 Torrent🔐 Verify
bluefin-lts-hwe-testing-x86_64.iso
AMDAMDIntelIntel
📥 Download ISO🧲 Torrent🔐 Verify
bluefin-gdx-lts-aarch64.iso
NVIDIAGDX (Nvidia Workstation)
📥 Download ISO🧲 Torrent🔐 Verify
bluefin-gdx-lts-x86_64.iso
NVIDIAGDX (Nvidia Workstation)
📥 Download ISO🧲 Torrent🔐 Verify
bluefin-lts-hwe-x86_64.iso
AMDAMDIntelIntel
📥 Download ISO🧲 Torrent🔐 Verify
bluefin-lts-x86_64.iso
AMDAMDIntelIntel
📥 Download ISO🧲 Torrent🔐 Verify
Major components in latest lts release (stable-20261015)
Kernel7.1.8
GNOME50.0
bootc1.16.13

Usage​

Systems active per day.

Bluefin LTS usage unavailable

No supported usage dataset is available for Bluefin LTS.

Release Assets & Attestations​

26.11.3ISO installer:testing
Nov 9, 2026
Asset fileSizeAction
bluefin-lts-hwe-testing-aarch64.iso-CHECKSUM102 BDownload
bluefin-lts-hwe-testing-aarch64.iso.torrent425.9 KiBDownload
bluefin-lts-hwe-testing-aarch64.iso.torrent-CHECKSUM110 BDownload
bluefin-lts-hwe-testing-x86_64.iso-CHECKSUM101 BDownload
bluefin-lts-hwe-testing-x86_64.iso.torrent455.0 KiBDownload
bluefin-lts-hwe-testing-x86_64.iso.torrent-CHECKSUM109 BDownload
26.11.2ISO installer:testing
Nov 2, 2026
Asset fileSizeAction
bluefin-lts-hwe-testing-aarch64.iso-CHECKSUM102 BDownload
bluefin-lts-hwe-testing-aarch64.iso.torrent424.3 KiBDownload
bluefin-lts-hwe-testing-aarch64.iso.torrent-CHECKSUM110 BDownload
bluefin-lts-hwe-testing-x86_64.iso-CHECKSUM101 BDownload
bluefin-lts-hwe-testing-x86_64.iso.torrent453.2 KiBDownload
bluefin-lts-hwe-testing-x86_64.iso.torrent-CHECKSUM109 BDownload
26.11.1ISO installer:testing
Nov 1, 2026
Asset fileSizeAction
bluefin-gdx-lts-aarch64.iso-CHECKSUM94 BDownload
bluefin-gdx-lts-aarch64.iso.torrent460.3 KiBDownload
bluefin-gdx-lts-aarch64.iso.torrent-CHECKSUM102 BDownload
bluefin-gdx-lts-x86_64.iso-CHECKSUM93 BDownload
bluefin-gdx-lts-x86_64.iso.torrent509.2 KiBDownload
bluefin-gdx-lts-x86_64.iso.torrent-CHECKSUM101 BDownload
26.10.9ISO installer:testing
Oct 26, 2026
Asset fileSizeAction
bluefin-lts-hwe-testing-aarch64.iso-CHECKSUM102 BDownload
bluefin-lts-hwe-testing-aarch64.iso.torrent424.1 KiBDownload
bluefin-lts-hwe-testing-aarch64.iso.torrent-CHECKSUM110 BDownload
bluefin-lts-hwe-testing-x86_64.iso-CHECKSUM101 BDownload
bluefin-lts-hwe-testing-x86_64.iso.torrent452.8 KiBDownload
bluefin-lts-hwe-testing-x86_64.iso.torrent-CHECKSUM109 BDownload
stable-20261015bootc OCI:stable
Oct 15, 2026
Supply chain & attestation:No attestation for this tag in the SBOM cache.
Bootc container switch:
sudo bootc switch --enforce-container-sigpolicy ghcr.io/projectbluefin/bluefin-lts:stable
Asset fileSizeAction
release-card-dark.png68 BDownload
release-card.png68 BDownload
uranium.spdx.json89.2 MiBDownload
stable-20261012bootc OCI:stable
Oct 12, 2026
Supply chain & attestation:No attestation for this tag in the SBOM cache.
Bootc container switch:
sudo bootc switch --enforce-container-sigpolicy ghcr.io/projectbluefin/bluefin-lts:stable
Asset fileSizeAction
bluefin-lts.spdx.json89.2 MiBDownload
release-card-dark.png68 BDownload
release-card.png68 BDownload
stable-20261011bootc OCI:stable
Oct 11, 2026
Supply chain & attestation:No attestation for this tag in the SBOM cache.
Bootc container switch:
sudo bootc switch --enforce-container-sigpolicy ghcr.io/projectbluefin/bluefin-lts:stable
Asset fileSizeAction
bluefin-lts.spdx.json89.2 MiBDownload
release-card-dark.png68 BDownload
release-card.png68 BDownload
stable-20261010bootc OCI:stable
Oct 10, 2026
Supply chain & attestation:No attestation for this tag in the SBOM cache.
Bootc container switch:
sudo bootc switch --enforce-container-sigpolicy ghcr.io/projectbluefin/bluefin-lts:stable
Asset fileSizeAction
bluefin-lts.spdx.json89.2 MiBDownload
release-card-dark.png68 BDownload
release-card.png68 BDownload
26.10.5ISO installer:testing
Oct 1, 2026
Asset fileSizeAction
bluefin-gdx-lts-aarch64.iso-CHECKSUM94 BDownload
bluefin-gdx-lts-aarch64.iso.torrent471.5 KiBDownload
bluefin-gdx-lts-aarch64.iso.torrent-CHECKSUM102 BDownload
bluefin-gdx-lts-x86_64.iso-CHECKSUM93 BDownload
bluefin-gdx-lts-x86_64.iso.torrent522.3 KiBDownload
bluefin-gdx-lts-x86_64.iso.torrent-CHECKSUM101 BDownload
bluefin-lts-hwe-x86_64.iso-CHECKSUM93 BDownload
bluefin-lts-hwe-x86_64.iso.torrent406.3 KiBDownload
bluefin-lts-hwe-x86_64.iso.torrent-CHECKSUM101 BDownload
bluefin-lts-x86_64.iso-CHECKSUM89 BDownload
bluefin-lts-x86_64.iso.torrent394.0 KiBDownload
bluefin-lts-x86_64.iso.torrent-CHECKSUM97 BDownload
26.10.4ISO installer:testing
Oct 1, 2026
Asset fileSizeAction
bluefin-gdx-lts-aarch64.iso-CHECKSUM94 BDownload
bluefin-gdx-lts-aarch64.iso.torrent471.5 KiBDownload
bluefin-gdx-lts-aarch64.iso.torrent-CHECKSUM102 BDownload
bluefin-gdx-lts-x86_64.iso-CHECKSUM93 BDownload
bluefin-gdx-lts-x86_64.iso.torrent522.3 KiBDownload
bluefin-gdx-lts-x86_64.iso.torrent-CHECKSUM101 BDownload
bluefin-lts-hwe-x86_64.iso-CHECKSUM93 BDownload
bluefin-lts-hwe-x86_64.iso.torrent406.3 KiBDownload
bluefin-lts-hwe-x86_64.iso.torrent-CHECKSUM101 BDownload
bluefin-lts-x86_64.iso-CHECKSUM89 BDownload
bluefin-lts-x86_64.iso.torrent394.0 KiBDownload
bluefin-lts-x86_64.iso.torrent-CHECKSUM97 BDownload