I have been hoping for this, I have been more or less promissing this and it is with great happiness and gratitude that I announce that on Boxingday we can showcase the first public Wikidata database. It contains some 70.000 words in 22 languages with definitions typically in 4 languages.
We have been given permission by European Environment Information and Observation Network (EIONET) to host the GEneral Multilingual Environmental Thesaurus (GEMET) thesaurus. This showcases our wish to have great relevant content in many languages that does have structures as can be found in thesauruses.
The data is not complete yet and the content will be improved. To put it in perspective, this read only implementation of a Wikidata database is a proof of concept. This will be expanded slowly but surely, not only to improve the technical features but also the information and the user interface.
We really welcome all your constructive comments.