“Internet Explorer 9 Beta is available in many languages. You can download Internet Explorer 9 Beta in the language that matches your version of Windows or choose the English version, which works with all versions of Windows Vista and Windows 7. For additional information, see How do I install or uninstall Internet Explorer 9?
If you need help finding out what version of Windows you're running, see Is my PC running the 32-bit or 64-bit version of Windows? “
From Arabic to Ukrainian Download languages for Internet Explorer 9 Beta
Also there are 4 additional display languages (Catalan, Hindi, Indonesian and Vietnamese) available via Windows Language Interface Packs, and you can download those LIPs at Download languages for Windows . Plus it is available in 4 Windows Server languages (Chinese (simplified), English, Hebrew and Slovenian).
Click here for more information on Internet Explorer 9 beta .