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Ubuntu 25.10 (Questing Quokka) Daily Build ISOs Are Now Available for Download
As expected, the first Ubuntu 25.10 daily builds are based on the previous Ubuntu release, Ubuntu 25.04 (Plucky Puffin), which arrived last month on April 17th, which means that they include the same core components and software versions as the Plucky Puffin release, such as Linux kernel 6.14 and GNOME 48 desktop.
During the six-month-long development cycle, the Ubuntu 25.10 daily build ISOs will be updated with many highly anticipated GNU/Linux technologies, as well as open-source software, such as the upcoming GNOME 49 desktop environment, Mesa 25.1 graphics stack, and probably Linux kernel 6.17, GCC 15, GNU Binutils 2.45, Python 3.13, LLVM 20, Boost 1.88, and others.
OMG Ubuntu:
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Ubuntu 25.10 Daily Builds Now Available to Download - OMG! Ubuntu
Development began on Ubuntu 25.10 earlier this month, beginning its 6-month march to a final, stable release on 7th October 2025 (owing to the nature of development that release date could change – it’s happened before).
Now that the initial sync, tooling and plumbing is done, the first installable ISO images are available to download.
I’m writing this very early in the 25.10 development cycle so—spoiler—there’s not a lot that’s “new” to see or play with (it’s mainly lower-level package updates so far).
That will change in the coming months as user-facing new features and major foundational changes start trickling in for testing.
Linuxiac:
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Ubuntu 25.10 Will Default to Rust-Powered sudo-rs
Canonical has announced that the upcoming Ubuntu 25.10 (Questing Quokka) release, scheduled for early October, will be the first major Linux distribution to replace C‑based sudo implementation with sudo‑rs, a Rust‑based reimplementation developed by the Trifecta Tech Foundation.
The tool was created under TTF’s Privilege Boundary initiative, which aims to harden components handling privilege escalation by leveraging Rust’s strong compile‑time guarantees against memory‑safety vulnerabilities. As a long‑time sudo maintainer, Todd Miller has collaborated directly with the sudo‑rs team, ensuring compatibility and continuity.
It's FOSS News:
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Ubuntu 25.10 is Switching to Rust-based Sudo
A few weeks ago, we got the first interim release of Ubuntu for 2025. The next one, Ubuntu 25.10, is due to come out in October, which is expected to offer new refinements that further improve the desktop experience on one of the most popular Linux distributions around.
Canonical has set out to "purposefully oxidize Ubuntu", by introducing Rust-based alternatives to existing components like Sudo, Coreutils, Findutils, and Diffutils with the help of a new command-line utility, oxidizr.
Now, they have announced that the upcoming Ubuntu 25.10 release will be moving to a Rust-based alternative of sudo.
Ji M:
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Ubuntu 25.10 Daily CD Image & Release Schedule are Out!
The developer team started the development of Ubuntu 25.10 in last week. Now the release schedule and daily build live CD image are out! Ubuntu 25.10, code-name Questing Quokka, is the next Ubuntu version planned to be released on October 09. It’s a short term release with 9-month support circle.