The Structured Data team is testing adding, editing, and removing other statements (besides depicts) to file pages and in the UploadWizard. If all goes well, the team will turn it on for Commons later next week. You can read more about testing on the SDC talk page [0], or head over to https://test-commons.wikimedia.org and pick a random file to get started. Feedback is welcome at the same SDC talk page link below.