Jellyfin Server 12.0 RC7
We are pleased to announce the seventh release candidate preview release of Jellyfin 12.0!
This is a preview release, intended for those interested in testing 12.0 before its final public release. We welcome testers to help find as many bugs as we can before the final release.
As always, please ensure you stop your Jellyfin server and take a full backup before upgrading!
A note about versioning
Starting with this release, we are dropping the preceding 10. from our versioning. Thus, 10.11.x -> [10.]12.x = 12.x. The reason is simple: at this point in the project, we don’t envision a hard break in the API like we planned way back in the early days, and this version scheme was causing a lot of confusion amongst users about what a “major” release was. For more information, please see the RC1 release notes.
What’s new?
The main goal of this release has been performance. 10.11.0 dropped a major backend rewrite, and while it was broadly functional, it had a lot of rough edges. This release seeks to polish out most of those rough edges and bring better performance to all users.
There are many other small fixes, improvements, changes, and translations. See our draft release notes here or below for the full list of pull requests. You can also view the Web side changelog here.
Note: You must be on Jellyfin 10.10.7+ or 10.11.x (ideally, 10.11.11) before upgrading! If you are not, the upgrade will fail. Ensure you upgrade to one of these versions first!
Note: The initial load of Jellyfin 12.x will run a few migrations and will take several minutes. Please be patient and do not interrupt the process. You can leverage the (newly improved!) startup UI on your local network to see specific progress, or off-network to see general progress, by visiting the server URL in your web browser during startup.
Note: If you install the RC, you should disable all external plugins and reinstall using the unstable plugin repository, or plugins may fail to load and cause unintended side effects.
Installing
This preview release is distributed in all our traditional forms, though not automatically via our Apt repository or latest tag.
- For all non-Docker environments, you can find the files for manual download in our repository by selecting “Stable Preview” for your OS.
- For Docker, you can pull the
12.0-rc7orpreviewtags.
What’s Changed (since v12.0-rc6)
Library and metadata fixes
Several corrections were made to how Jellyfin handles virtual items and metadata. Child counts on virtual items are now accurate, and episode parent IDs in virtual seasons are properly set. Anime provider IDs are now supported on season folders, and episodes are counted by the season they actually belong to. Recursive handling for linked children has been fixed, and the PeopleValidationTask now enforces a reliable processing order.
Search, permissions, and item counts
Search candidates are now filtered by user access in a single query, which improves both correctness and performance. Permissions are enforced on similar items, preventing unauthorized content from appearing. Item counts on the by-name endpoints have also been corrected.
Settings and integrations
ListenBrainz settings and similar item defaults have been fixed, ensuring those integrations behave as expected without manual intervention.
Migrations and logging
Progress logging has been added to data migrations, so you can see exactly what’s happening during the initial startup after upgrading. A formatting and test fix rounds out the changes.
Full Changelog: v12.0-rc6...v12.0-rc7
