Jellyfin 12.0 launches with numbering update and major database overhaul

The short version

• The open-source media platform released Jellyfin 12.0, discarding the leading '10' from its ongoing version naming structure.[Hacker News]
• The update introduces database schema modifications that actively rewrite stored data on first boot, mandating complete manual backups before upgrading.[Hacker News]
• Supported direct upgrades are limited to instances running Jellyfin 10.10.7 or any 10.11.x release, and older 10.11 third-party plugins must be removed.[Hacker News]
• Upgraded systems require a full library scan to restore automatically grouped alternate versions, which now support TV episodes alongside movies.[Hacker News]

Key facts

• Jellyfin 12.0 represents a new stable release that removes the major version 10 from its standard naming scheme.[Hacker News]
• The update changes the database schema and actively rewrites records on first boot, requiring users to make a complete manual backup before upgrading.[Hacker News]
• Users must already be operating Jellyfin 10.10.7 or any 10.11.x version before executing an upgrade to version 12.0.[Hacker News]
• Usernames are now treated as case-insensitive, disallowing multiple accounts that differ solely by letter capitalization.[Hacker News]
• Third-party plugins constructed for 10.11 will fail to load in 12.0 and need to be uninstalled prior to installation.[Hacker News]
• A full library scan is mandatory post-upgrade because automatically grouped alternate file versions are cleared during the migration.[Hacker News]
• Support for legacy /emby/ and /mediabrowser/ endpoints was dropped, causing older third-party client software to stop functioning.[Hacker News]
• Alternate versions are expanded to support TV episodes in addition to movies, alongside security patches for both the server and web client.[Hacker News]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.

• Jellyfin 12.0Hacker News