The Ubuntu 26.10 “Stonking Stingray” beta will not ship on September 24 as scheduled. Canonical’s Matthieu Clemenceau announced on the Ubuntu Discourse on September 24:

“Due to unforeseen infrastructure issues, Ubuntu 26.10 Stonking Stingray Beta will be delayed by a week and is now expected on October 1st.”

He added that the team expects “to resolve the blocking issue shortly.” No further detail was given about what broke.

The final release date holds

The important part for most people: the final release is still planned for October 15. That compresses the gap between beta and release from three weeks to two, which means less time for beta testers to report problems before the images are final.

Milestone	Original	Now
Beta	September 24	October 1
Final release	October 15	October 15 (unchanged)

What 26.10 brings

26.10 is an interim release with nine months of support, and Canonical has openly described it as a staging ground for Ubuntu 28.04 LTS. The notable changes already confirmed:

• Linux 7.3 as the kernel, confirmed earlier this month, even though 7.3 itself is still at rc5
• Rust coreutils everywhere: the migration from GNU coreutils to uutils is now complete, including cp, mv, and rm, which were held back in 26.04. We explain what that means in practice in Rust coreutils explained
• A new desktop out-of-memory policy
• GNOME 51, which shipped on September 16
• A reworked onboarding experience and a package-agnostic App Center

Should you test the beta?

If you run Ubuntu on hardware you care about and plan to move to 26.10 or eventually 28.04, the beta is the moment your bug reports matter most. With one week less for testing, that is more true than usual. Install it in a VM or on a spare disk, not over your daily system, and read our guide on updating Linux safely before upgrading anything in place.

If you stay on 26.04 LTS, which is the right choice for most people, nothing here affects you.