Ahoy, brave testers, the fourth — and final — monthly snapshot of Ubuntu 25.10 (Questing Quokka) is available for download.
As you (hopefully) know by now, the new Ubuntu monthly snapshot releases are part a new automated build process Canonical is testing this cycle. The goal is to create a system that needs ‘little to no human intervention’ to generate valid, working ISOs for testing.
As part of the pipeline, a transparent process lets distro developers add test routines to try try and catch bugs and major issues earlier in the release cycle. Presently, most show-stopping issues only get found once the beta is released and more ‘human’ eyes are involved.
Canonical developer Utkarsh Gupta puts it on Ubuntu Devel mailing list: “…these aren’t production ready and should be seen as “throwaway artifacts” for now”.
In a sense, Ubuntu monthly snapshots are as much about letting distro’s engineers kick the tyres on their new automated image building process as generating consumable ISOs for community testers.
Aside from differences in ‘how the sausage gets made’, there are no functional or package differences between the Ubuntu monthly snapshot images and the standard Ubuntu daily builds.
Download Ubuntu Snapshot 4
To download Ubuntu 25.10 Snapshots head over to the official Ubuntu CD image server to get a bootable, installable snapshot of Ubuntu, though snapshots for all of Ubuntu’s official flavours are available at their respective cdimage URLs.
Ubuntu 25.10 is still under heavy development, so expect further fixes, updates, and changes to land ahead of user interface freeze in the coming weeks.
The latest snapshot offers GNOME 49 (beta), Linux Kernel 6.16 (the final release is aiming to ship with Linux 6.17), plus Rust-based sudo, new default terminal and image viewer apps, and new wallpapers — but no X11/xorg session out-of-the-box.
Ubuntu 25.10 Snapshot 4 is the final monthly snapshot as next month sees the Ubuntu 25.10 Beta release, expected on September 18 2025.
If you install this snapshot — keep in mind it’s unstable — just install updates as they arrive to keep up to date (you won’t need to reinstall with the beta, etc).
The final stable release of Ubuntu 25.10 remains set for release on Thursday, October 9 2025.