That brings me to the latest news I found while browsing the forums at my desk today.

Jellyfin dropped its first release candidate for version 12.0, and they are making some massive structural changes. If you have been hosting your own media for a while, you know that jumping major versions is usually where the real chaos begins.

Dropping Digits and Finding Speed

The developers are finally shedding the old naming convention and dropping the preceding ten from their version numbers. Moving from the 10.11 branch straight into 12.0 signifies a shift toward a more streamlined release cycle.

According to the developers, the main objective of this massive overhaul is pure performance.

They are addressing the rough edges left behind by previous database rewrites to make the entire interface significantly snappier. In my office, my mini rig usually chugs a bit when pulling up massive libraries, so any promise of optimization definitely catches my eye.

The Price of Progress

The catch with these massive milestones is that they rarely happen without a few growing pains. Upgrading directly to the 12.0 preview requires you to be running a specific late-stage version of the older branch, or the entire migration fails completely.

Furthermore, the initial boot sequence runs heavy database migrations that will take several minutes to process.

Interrupting that process is a fast track to data corruption. My wife already tolerates enough tech friction when the local network hiccups during her shows, so the last thing I need is a bricked media database.

Navigating the Breaking Changes

Before you even think about pulling the latest docker tag, you absolutely have to disable every single plugin on your system. The stable plugins we rely on daily will completely fail to load on the new architecture until developers update them.

Because of this, you will need to rely on the unstable plugin repository just to get basic features working again.

It is the classic self-hoster dilemma where you sacrifice stability for the shiny new toy.

Backups Are Not Optional

If you take the plunge without copying your config directory to a safe space, you are playing russian roulette with your watch history. The community is already reporting issues with setup wizards freezing and certain media player plugins disappearing into the void.

This release candidate is strictly meant for testing, not for your production environment.

Do not let the promise of better performance trick you into skipping a full server backup.