The admin control panel now makes new features available in all languages at the same time. Previously, admins had to choose between viewing the admin control panel in English to receive the very latest features or waiting until new features had been translated into their preferred language. Instead, the control panel will always be displayed in the admin’s preferred language.
Google Apps, Google Apps for Business, Government, and Education
For more information:
How to choose a language for your control panel: http://support.google.com/a/