Ubuntu 25.04, code-named "Plucky Puffin," has been released by Canonical. It is the first big non-LTS update since Ubuntu 24.04. This new release introduces a range of enhancements that improve performance, accessibility, security, and hardware support. While Ubuntu 24.04 LTS remains the recommended long-term deployment choice, version 25.04 allows users and developers to experience the latest technologies in the Ubuntu ecosystem.

Ubuntu 25.04 includes the Linux 6.14 kernel, the updated GNOME 48 desktop environment, improved installer options, an officially supported ARM64 desktop ISO, and various system-level upgrades that demonstrate Canonical’s continued focus on cross-architecture support, performance tuning, and user experience.

Refreshed Desktop Experience With GNOME 48

One of the standout features in Ubuntu 25.04 is the inclusion of the GNOME 48 desktop, which brings both visual and performance improvements. A key technical enhancement is the introduction of triple buffering, aimed at improving responsiveness and graphical fluidity, especially on lower-end or older hardware configurations. This change enhances the smoothness of desktop interactions, application transitions, and system animations.

In addition to backend performance, GNOME 48 introduces a cleaner and more organized system settings interface. Navigation within the settings menu has been restructured, making it easier for users to access display configurations, accessibility tools, and privacy controls. UI responsiveness has been tuned across high-DPI displays, contributing to a more polished and professional user experience.

Linux 6.14 Kernel Brings Advanced Hardware Support

At the foundation of Ubuntu 25.04 is the Linux 6.14 kernel, offering a host of technical upgrades that improve system performance, compatibility, and security. This kernel includes expanded support for Intel’s Battlemage GPUs, Core Ultra Xe2 integrated graphics, and Snapdragon X Elite platforms. These additions reflect Canonical’s commitment to keeping Ubuntu optimized for current and next-generation hardware.

The 6.14 kernel also enables better ray tracing support through improvements in the Intel Embree framework and NVIDIA Dynamic Boost, enabled by default for compatible laptops, allowing the operating system to manage GPU power use more efficiently during demanding tasks.

For server administrators and enterprise users, enhancements to file systems and scheduling routines allow for improved I/O performance and better scalability under concurrent workloads. These upgrades make Ubuntu 25.04 not only a suitable desktop OS but also a strong candidate for development and test environments.

ARM64 Desktop ISO

Ubuntu 25.04 marks the first release with an officially supported ARM64 desktop ISO, a strategic milestone in Canonical’s cross-platform vision. The new ARM64 build is designed for systems using ACPI and EFI firmware. It is compatible with various ARM-based devices, including Snapdragon-powered Windows-on-ARM hardware, virtual machines, and single-board computers.

This development opens the door to broader adoption of Ubuntu in ARM-based computing environments, whether for energy-efficient personal computing or edge deployments. Canonical’s addition of initial support for platforms like Snapdragon X Elite ensures that Ubuntu can keep pace with shifts in silicon innovation and mobile-class hardware trends.

Users of the ARM64 ISO will find that it offers parity with the x86 edition of Ubuntu 25.04, including the same GNOME desktop, software repositories, and system features.

System Installer Improvements and Dual-Boot Support

Ubuntu 25.04 introduces an updated installer that enhances user experience and automation options. The new installer allows autoinstall configuration files to be imported from local file paths, streamlining custom deployments and simplifying system provisioning in enterprise environments.

A more straightforward "replace existing installation" option has been added, allowing users to overwrite prior Ubuntu versions or Linux installations without needing manual partition management.

Dual-boot capabilities have also been improved. Notably, Ubuntu 25.04 brings enhanced detection and handling of BitLocker-encrypted Windows partitions, reducing errors and making it easier to set up Ubuntu alongside Windows in a secure dual-boot environment.

Notable App and Shell Changes

Several key application and utility updates have been made in Ubuntu 25.04. One significant change is the replacement of Evince with Papers as the default PDF and document viewer. Papers introduces a more modern UI and improved document navigation and rendering support.

The xdg-terminal-exec package is now included by default, which improves the functionality of launching terminals from the desktop with keyboard shortcuts like Ctrl + Alt + T, making the user workflow more seamless and efficient.

Another change involves geolocation support, which is now enabled by default and powered by beaconDB, allowing applications to access system-level location data where applicable. It aligns Ubuntu with expectations set by other modern operating systems while respecting user consent and privacy.

Security and Sandbox Enhancements

Canonical continues prioritizing system security in Ubuntu 25.04, with upgrades to the AppArmor framework. Additional application profiles have been added to enhance the sandboxing of commonly used applications, reducing the risk of privilege escalation and limiting access to sensitive system resources.

Kernel-level security updates include improved memory isolation and protection against speculative execution attacks. These mitigations help harden the operating system for personal and professional users, especially in multi-user environments or internet-facing deployments.

Furthermore, firewall defaults have been adjusted to minimize open ports and reduce initial exposure on fresh installations, reinforcing Ubuntu’s reputation for secure default configurations.

Updated Development Stack and Package Manager

Developers will find several notable updates in Ubuntu 25.04. The system ships with GCC 15, LLVM 20, and Rust 1.84, along with updated versions of Python and Go. These updates provide compatibility with the latest software projects and ensure performance and security improvements from the latest language runtimes.

APT 3.0 is now the default DEB package manager, offering more intelligent dependency resolution and improved download performance. The updated APT system also provides better error feedback and reduces inconsistencies during complex install or upgrade operations.

Conclusion

Ubuntu 25.04 "Plucky Puffin" is a feature-rich release that showcases Canonical’s dedication to modern computing needs. With a refined desktop powered by GNOME 48, a capable Linux 6.14 kernel, officially supported ARM64 ISO, and meaningful enhancements to installation, system performance, and application security, it delivers a well-rounded Linux experience. This release is particularly relevant for users who want access to emerging technologies and improved hardware compatibility before the next LTS cycle.