Ubuntu 24.04 LTS vs. Ubuntu 23.10: What's New and Improved

Ubuntu 24.04 LTS (Noble Numbat) brings a host of new features, updates, and improvements over the previous release, Ubuntu 23.10. This comprehensive guide will delve into the significant changes and enhancements, providing valuable insights for users looking to upgrade or learn more about the latest Ubuntu LTS release.

Introduction

Ubuntu 24.04 LTS offers a range of new features and updates, ensuring improved performance, security, and usability. With extended support until June 2029, this release is ideal for users seeking long-term stability and support.

Upgrades and Support

Users of Ubuntu 23.10 will receive automatic upgrade offers to 24.04 shortly after release. Those on 22.04 LTS will be offered the upgrade when 24.04.1 LTS is released in August 2024.

New Features in Ubuntu 24.04 LTS

Year 2038 Support for ARMhf Architecture

This release addresses the Year 2038 problem for ARMhf architecture, updating over a thousand packages to handle time with a 64-bit value, extending functionality far into the future.

Updated Packages and Toolchains

The Linux kernel is updated to version 6.8, and systemd is now at v255.4. Key toolchain updates include GCC 14, Python 3.12, OpenJDK 21, and many others, providing enhanced performance and security.

Security Improvements

Unprivileged User Namespace Restrictions

The kernel now restricts unprivileged user namespaces by default, enhancing security. AppArmor profiles can be used to manage permissions for applications needing this feature.

TLS and RSA Key Changes

TLS 1.0, 1.1, and DTLS 1.0 are forcefully disabled, and 1024-bit RSA keys are deprecated. These changes ensure more secure communications and package management.

Performance Enhancements

Performance Engineering Tools

New performance engineering tools are installed by default, assisting in debugging and optimizing system performance.

Configuration Changes

Apt Priority Adjustments

The default priority of the proposed pocket in Apt has been reduced to prevent unintended installation of unstable updates, improving system stability.

Service Restarts on Unattended Upgrades

Services affected by library upgrades are now systematically restarted during unattended upgrades, ensuring that security patches are fully applied.

Desktop Environment Updates

GNOME 46

GNOME has been updated to version 46, bringing new features and fixes for a smoother user experience.

New App Center

The new Ubuntu App Center, built with Flutter, replaces the Snap Store, providing a modern and efficient interface for managing applications.

Server Enhancements

Apache2 2.4.58

Apache2 has been updated with significant changes, including improved handling of HTTP/2 connections and new directives for managing certificates.

ClamAV 1.0.0

ClamAV has seen major updates, including support for decrypting encrypted XLS files and enhancements to file inspection during scans.

Conclusion

Ubuntu 24.04 LTS offers substantial improvements over 23.10, with new features, updated packages, and enhanced security. This release is ideal for users seeking a stable and long-term supported operating system.

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