A while ago the first phase of Wikidata was enabled on this Wikipedia. This means you are getting the language links in each article from Wikidata. We have now enabled the second phase of Wikidata (infoboxes) here. We have already done this on the [first 11 Wikipedias] (it, he, hu, ru, tr, uk, uz, hr, bs, sr, sh) a month ago and two days ago on the English Wikipedia. Today all the remaining Wikipedias followed.