Keeping up with its continuous development approach Google Apps mail has now added 8 new languages. This is available to Standard, Premier, Education and Partner Editions
New Languages
Bengali, Gujarati, Kannada, Malayalam, Marathi, Oriya, Tamil and TeluguGmail now supports following languages
Arabic, Bengali, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Kannada, Korean, Latvian, Lithuanian, Malay, Malayalam, Marathi, Norwegian, Oriya, Polish, Portuguese, Romanian, Russian, Serbian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tagalog, Tamil, Telugu, Thai, Traditional Chinese, Turkish, UK English, US English, Ukrainian, and Vietnamese.
To access what's new - Sign in to Gmail, click 'Settings', and select the interface language you prefer.
For more information:
http://www.google.com/a/help/intl/en/users/gmail.html