Just to make sure everybody knows, Wikidata arbitrary
access is now
enabled on the test-wiki,
http://test.wikipedia.org
so as of now, it is now possible to start designing and testing
templates for future use on Commons that draw on Wikidata.
-- eg for images of works of art, etc, etc, etc
If we can knock together some concrete prototypes, this will surely help
the Commons Wikibase development team.
- J.