Google Sites has always supported user content in any language, but the interface itself has been English-only. With this release, the application interface is available in 38 languages.

Editions impacted:
Standard, Premier, Education, Team and Partner Editions

Languages impacted:
Bulgarian, Catalan, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, US English, English (UK), Filipino, Finnish, French, German, Greek, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Norwegian, Polish, Portuguese (Brazil), Portuguese (Portugal), Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Ukrainian, and Vietnamese.

How to access what's new:
Sign in to Google Sites, click 'My sites' and then 'User settings' to change your interface language preferences.

For more information:
http://www.google.com/apps/intl/en/business/collaboration.html#sites