Kubuntu
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Introduction
We are preparing Kubuntu Questing Quokka (25.10) for release in September, 2025. With this Beta pre-release, you can see what we are testing in preparation for our next version.
NOTE:
This is Beta Release. Kubuntu Beta Releases are NOT recommended for:
- Regular users who are not aware of pre-release issues
- Anyone who needs a stable system
- Anyone uncomfortable running a possibly frequently broken system
- Anyone in a production environment with data or workflows that need to be reliable
Kubuntu Beta Releases are recommended for:
- Regular users who want to help us test by finding, reporting, and/or fixing bugs
- Kubuntu, KDE, and Qt developers
Please report your installation results on the Release tracker.
General bug reporting guidelines can be found here: ReportingBugs and KubuntuBugTriage.
Getting Kubuntu 25.10 Beta
Upgrading from 25.04
To upgrade to a Kubuntu 25.10 pre-release version, run sudo do-release-upgrade -d from a command line.
Download a Disk Image
Download a Bootable image. Direct downloads, torrents, and zysnc are available as options.
New features and changes in 25.10 Beta
A detailed description of the changes in the Ubuntu base can be found in the main Questing Quokka release notes.
Kubuntu core desktop and applications
Plasma 6.4:
The Kubuntu team have been working hard to ship 25.10 with the latest Qt6 based Plasma 6.4 KDE desktop.
Included is Plasma 6.4 which is the fifth feature release of the 6 series.
More details of what was new with Plasma 6 can be found in the original announcement for the first 6.0 release.
Plasma Wayland session
The Plasma Wayland session is the default.
Plasma X11 session
The Plasma X11 session is not installed by default on a clean install, but can be easily added by installing the plasma-session-x11 package.
Qt and KDE Frameworks
Kubuntu 25.10 Beta ships with Qt6.8 and KDE Frameworks version 6.17.0.
For applications that are still based on Qt5/KF5, Qt5 5.15.17 and Frameworks 5.116.0 are still in the archive.
KDE Applications updates
All KDE gear currently packaged by Ubuntu or Debian are now at least at the latest 25.08
Web browser and office suite
Firefox 143 snap is the default browser from the Snap Store.
LibreOffice 25.8.1~rc1 is provided by default in the full installation.
Kernel
Kubuntu 25.10 ships with the 6.17 Linux kernel.
Known issues
Installer and live session
Other issues
Feedback
Development of Kubuntu 25.10, Questing Quokka Oriole, is ongoing and bugs are fixed every day. Before reporting bugs, please ensure your system is up to date. For verifying installation related bugs, updated disk images are available from Daily bootable images for standard PCs and laptops.
QuestingQuokka/Beta/Kubuntu (last edited 2025-09-19 06:52:13 by rikmills)