Hoi,
The Polish Wikipedia has implemented the Wikidata based search functionality as well [1]. It is really exciting that a second top 10 Wikipedia in pageviews has adopted this functionality

I do not have to remind you that this will stimulate them to add statements and labels to improve the provided disambiguation. It is beyond my wildest dreams that two such diverse big communities have taken this path. For optimal results I would like Chinese, Russian and Arabic adoption as well.

Then again this party will not be complete when the functionality is not adopted by any and all Wikipedias.
Thanks,
     GerardM

[1] http://ultimategerardm.blogspot.nl/2013/12/wyniki-wyszukiwania-w-wikidata.html