These are newly added to Yosemite someone else posted in a forum:
Arabia (Saudia Arabia)
Catalan (Spain)
Croatian (Crotia)
Czech (Czech Republic)
Danish (Denmark)
Dutch (Netherlands)
Finnish (Finland)
Greek (Greece)
Hebrew (Israel)
Hungarian (Hungary)
Indonesian (Indonesia)
Malay (Malaysia)
Norwegian Bokmal (Norway)
Polish (Poland)
Portuguese (Brazil, Portugal)
Romanian (Romania)
Russian (Russia)
Slovak (Slovakia)
Swedish (Sweden)
Thai (Thailand)
Turkish (Turkey)
Ukrainian (Ukraine)
Vietnamese (Vietnam)