Structured data on Commons: Multilingual captions beta testing
The Structured Data on Commons team has begun beta testing of the first feature, multilingual file captions, and all community members are invited to test it out. Captions is based on designs discussed with the community  and the team is looking forward to hearing about testing.
***If all goes well during testing, captions will be turned on for Commons around the second week of January, 2019.***
Multilingual captions are plain text fields that provide brief, easily translatable details of a file in a way that is easy to create, edit, and curate. Captions are added during the upload process using the UploadWizard, or they can be added directly on any file page on Commons. Adding captions in multiple languages is a simple process that requires only a few steps.
There is [[mw:Help:File_captions|a help page available on how to use multilingual file captions]]
Beta Commons is a testbed, and not configured exactly like the real Commons site, so expect to see some discrepancies with UI elements like search
Structured Data introduces the potential for many important page changes to happen at once, which could flood the recent changes list. Because of this, Enhanced Recent Changes is enabled as it currently is at Commons, but with some user interface changes.