It looks like the diff subheaders on the Wikidata diff page are not localisable/i18n-ed.
- aliases / nl / 0 and aliases / nl / 1
: I assume these are the first and the second aliases for language code "nl" or Dutch. That's not that user friendly.
- label / nl
- description / nl
- links / nlwiki
Given that these are the same when adding "uselang=de" to the URL, I come to the conclusion that there's no i18n here yet.