The new Ukrainian Parliament voted to repeal the law that permits regional use of languages other than Ukrainian for official purposes - the interim President has currently refused to sign the change into law.
"The Ukrainian Parliament (Verkhovna Rada) abolished the 2012 law “On State Language Policy” the day after it voted to dismiss President Viktor Yanukovich. The law allowed the country’s regions to use more official languages in addition to Ukrainian if they were spoken by over 10 percent of the local population. Thirteen out of Ukraine’s 27 regions, primarily in Eastern Ukraine, then adopted Russian as a second official language. Two Western regions introduced Romanian and Hungarian as official languages."
http://rt.com/news/minority-language-law-ukraine-035/