These translations are currently available for at least some applications. You can find complete statistics about the state of the different translations here.
Arabic (Oman)
Arabic (Syria)
Bosnian
Brazilian Portuguese
Bulgarian
Catalan
Chinese (Simplified)
Chinese (Traditional)
Czech
Danish
Dutch
Estonian
Finnish
French
German
Greek
Hebrew
Hungarian
Icelandic
Indonesian
Italian
Japanese
Khmer
Korean
Latvian
Lithuanian
Norwegian Bokmål
Persian (Western)
Polish
Portuguese
Romanian
Russian
Slovak
Slovenian
Spanish
Swedish
Thai
Turkish
Ukrainian