Canonical Ubuntu 26.04 LTS (Resolute Raccoon) Update Version Ubuntu 26.04 LTS

Ubuntu 26.04 LTS (Resolute Raccoon) adds major desktop, server, security, AI/ML, and hardware support updates. It also introduces important migration changes such as Wayland-only desktop sessions, chrony, APT 3, systemd 259, and new default packages and tools.

• New AppArmor sandboxing profiles improve confinement for more applications.
• TPM-backed full-disk encryption is available for stronger disk protection.
• OpenSSL adds post-quantum cryptography support with ML-KEM, ML-DSA, and SLH-DSA.
• OpenSSH 1:10.2p1 removes weak DSA support, warns on non-post-quantum key exchange, and deprecates SHA1 SSHFP records.
• SSSD now runs as the sssd user instead of root, reducing privilege exposure.
• Samba adds LDAP TLS/SASL channel binding support and other security-related authentication improvements.
• authd adds device ownership, identity-provider access checks, and OIDC/Google/Microsoft Entra authentication support.
• cargo-auditable support helps identify Rust binary dependencies for CVE impact analysis.

• GNOME desktop updates improve responsiveness, accessibility, remote desktop behavior, and file chooser integration.
• Firefox, LibreOffice, Thunderbird, and GIMP were updated to newer major versions.
• ClamAV 1.4.3 adds broader archive, document, and attachment scanning support.
• Samba 4.23 includes AD DC schema and provisioning performance improvements.
• Squid 7.2 includes several crash fixes and new proxy features.
• Netplan 1.2 adds parser and backend fixes, including support for non-standard OVS setups.
• APT 3.1 introduces a new dependency solver, OpenSSL-based TLS/hashing, and history management commands.
• Kernel updates add support for newer Intel platforms, ARM64 Livepatch, and real-time kernel availability in the main archive.

• GNOME 50 with fractional scaling enabled by default, improved remote desktop, and new accessibility and usability features.
• New GNOME Shell search providers for snap applications and web search.
• New default apps and utilities including Papers, Loupe, Ptyxis, Resources, Showtime, and Sysprof.
• LocalSearch replaces Tracker Miners for desktop indexing.
• Chrony is the default time daemon for new installations.
• DocumentDB is now available in Ubuntu.
• PostgreSQL 18 adds performance improvements, OAuth 2.0 authentication, and new SQL features.
• Valkey 9.0 is available starting with 9.0.3.
• The NVIDIA CUDA toolkit, AMD ROCm 7.1.0, and Intel DPC++/oneAPI packages are now available in the archive.
• A new HWE virtualization stack is introduced for qemu, libvirt, seabios, and edk2.
• The real-time Linux kernel is now available in the main archive.
• Ubuntu Insights replaces Ubuntu Report for opt-in metrics collection.
• Dracut is now the default initramfs infrastructure.
• sudo-rs is now the default sudo provider, and rust-coreutils are now the default core utilities.
• AMD64v3 package variants are introduced for newer x86-64 hardware.

• PreLogin and PostSession scripts were removed from GNOME; environments relying on them must migrate to PAM session modules.
• Raspberry Pi devices require up-to-date boot firmware for the new boot partition layout.
• RISC-V support is limited to RVA23S64 hardware; no physical RVA23S64 systems were available at release time.
• IBM Z support now requires z15 or newer hardware.
• Samba Active Directory Domain Controllers must have samba-ad-dc installed before upgrading or AD DC functionality may break.
• RabbitMQ is not directly upgradable and requires manual migration steps.
• Postfix is no longer installed in a chroot by default, with only limited chroot support remaining.
• Ubuntu Desktop no longer includes Software & Updates by default; it can be installed manually.

• Upgrading from Ubuntu 24.04 LTS includes all changes from the interim releases 24.10, 25.04, and 25.10.
• To migrate existing systems to chrony, run apt-mark auto systemd-timesyncd and apt install chrony.
• For LocalSearch audio/video/ISO/office indexing, install localsearch-extractor-{ffmpeg,iso,office} or select third-party media formats during installation.
• To switch between GNU and rust coreutils, install coreutils-from-gnu or coreutils-from-uutils with --allow-remove-essential.
• APT 3 removes apt-key; key management now uses gpgv directly.
• Ubuntu Desktop sessions now run only on Wayland; X11 apps continue to work through XWayland.
• The Software & Updates app can be installed manually with sudo apt install software-properties-gtk.
• For Samba upgrades from Ubuntu 24.04 LTS, transitional packages samba-vfs-modules and samba-vfs-modules-extra can be removed after upgrade.
• For Raspberry Pi, check firmware with sudo rpi-eeprom-update; update if older than the required date for your model.
• The new virtualization HWE stack is delivered as qemu-hwe, libvirt-hwe, seabios-hwe, and edk2-hwe.
• To install CUDA, use sudo apt install cuda-toolkit.
• Ubuntu 26.04 LTS is the last release that supports System V service scripts compatibility in systemd.

Product Information

Vendor: Canonical

Product: Ubuntu

Version: Ubuntu 26.04 LTS

Release date: Apr 23, 2026