Ubuntu 25.10 daily builds have begun incorporating the Linux 6.17 kernel, despite its official release not occurring until later in September. Canonical has adjusted its policy to use the latest in-development kernel for new Ubuntu versions, allowing developers to implement potentially unstable kernels in a more streamlined manner.
Currently, the 6.17 kernel in the daily builds is classified as "unstable," a term that indicates it’s based on a recent release candidate with relevant Canonical patches and modifications. As there was some uncertainty regarding whether Ubuntu 25.10 would ship with Linux 6.16 or a version of 6.17, this decision clarifies that users can expect to experience the newer kernel upon the ISO’s release.
This early adoption of the 6.17 kernel is particularly beneficial for users testing the distro on newer hardware, as it may enhance compatibility and performance. As the Ubuntu 25.10 release date approaches—scheduled for October 9, 2025—users can anticipate receiving software updates to the stable final version of the kernel once it becomes available.
For further information, you can explore more about the Linux kernel updates: