Upgrade Server from 25.10 to 26.04 LTS

[whitetiger-it]

Ubuntu Version:
25.10

Problem Description:
I tried upgrading the server from 25.10 to 26.04 LTS
with the Prompt=normal in release-upgrades I get the error
No new releases found.
with Prompt=lts I get the error
There is no development version of an LTS available.
To upgrade to the latest non-LTS development release
set Prompt=normal in /etc/update-manager/release-upgrades

[guiverc]

@whitetiger-it

with the Prompt=normal in release-upgrades I get the error
No new releases found.

That is expected, as the ISO release ONLY has occurred for Ubuntu 26.04 LTS thus far.

The ISO release is for new installs, not release-upgrades from prior releases.

The Ubuntu release upgrader tool checks a meta changefile (https://changelogs.ubuntu.com/meta-release) which is just a text file so it’s easy to explore; you’ll note a “Supported: 0” on the resolute entry; which is WHY you’re getting the

@whitetiger-it

No new releases found.

message. That is expected for an ISO release before the taps for upgrades are supported. FYI: I’d expect it to say “No new release found” but I’m betting you typed that out, rather than copy/pasted & made a typo.

You can force it using the -d option, which will cause a different file to be used (ie. https://changelogs.ubuntu.com/meta-release-development) and the upgrade will be allowed; but for now that is intended for Quality Assurance testing, and upgrades won’t be assessed by the Ubuntu Release team until EARLY next week, where they assess any bug reports, any blocker bugs & decide if it’s stable and thus the details in the meta-change files will be amended.

The delay is to ensure its stable, as Ubuntu prizes stability.

Ubuntu 26.04 LTS is currently for new installs; with more to come.

[g-schick]

Best practice for a successful release-upgrade to 26.04

1. Be Patient You’ll see bad advice telling you to use do-reease-upgrade -d. Don’t do it…unless you want to be tester and report bugs. Wait until the supported release-upgrade window opens. Your system will prompt you. 25.10 users: Your window opens a few weeks. 24.04 users: Your window opens in August. 2. Backup your data [Optional] If things go wrong, you will be very happy you did. It turns a catastrophe into a minor annoyance. 3. Make a 26.04 LiveUSB installer [Optional] This is a gre…

[Actionparsnip]

You won’t see the upgrade until Ubuntu 26.04.1 is released

[guiverc]

@Actionparsnip

You won’t see the upgrade until Ubuntu 26.04.1 is released

That makes little sense, since the release we’re talking about is Ubuntu 25.10, which will reach its EOL before Ubuntu 26.04.1’s release.

As Ubuntu 25.10 was the prior release, the changes are far fewer, so its usually opened in the following week(s).

The months of delay applies to the prior LTS only, which has two years (not six months) of changes and is thus more complexities, thus the extra time to get everything stable.