Enlarge / Ubuntu has come a long way over nearly 20 years, to the point where you can now render 3D Ubuntu coffee mugs and family pictures in a video announcing the 2024 spring release. (credit: Canonical)

History might consider the most important aspect of Ubuntu 24.04 to be something that it doesn’t have: vulnerabilities to the XZ backdoor that nearly took over the global Linux scene.

Betas, and the final release of Ubuntu 24.04, a long-term support (LTS) release of the venerable Linux distribution, were delayed, as backing firm Canonical worked in early April 2024 to rebuild every binary included in the release. xz Utils, an almost ubiquitous data-compression package on Unix-like systems, had been compromised through a long-term and elaborate supply-chain attack, discovered only because a Microsoft engineer noted some oddities with SSH performance on a Debian system. Ubuntu, along with just about every other regularly updating software platform, had a lot of work to do this month.

What is actually new in Ubuntu 24.04, or “Noble Numbat?” Quite a bit, especially if you’re the type who sticks to LTS releases. The big new changes are a very slick new installer, using the same Subiquity back-end as the Server releases, and redesigned with a whole new front-end in Flutter. ZFS encryption is back as a default install option, along with hardware-backed (i.e. TPM) full-disk encryption, plus more guidance for people looking to dual-boot with Windows setups and BitLocker. Netplan 1.0 is the default network configuration tool now. And the default installation is “Minimal,” as introduced in 23.10.