Barry Goffe, Director of Windows Ultimate, today disclosed on windowsultimate.com that the remaining 19 language packs have been made available via Windows Update.
The additional supported languages are:
* Arabic
* Bulgarian
* Croatian
* Czech
* Estonian
* Greek
* Hebrew
* Hungarian
* Latvian
* Lithuanian
* Polish
* Portuguese (Portugal)
* Romanian
* Serbian
* Slovak
* Slovenian
* Thai
* Turkish
* Ukrainian

Source- Windows ultimate blog