For those interested in the progress of Wikidata and the “Ultimate Wiktionary”, we have just posted a prototype containing lexicological data from the General Multilingual Environmental Thesaurus (GEMET) used in the European Union (over 70,000 words in more than 20 languages imported so far). This is a first read-only stab at a complex structured data wiki application. I’ve posted further details on wikitech-l.