Google made available their Labs in Google Calendar. Google Calendar Labs will not only make it possible for Google to release experimental Calendar features early and often to users, but the new Calendar API will also let Google Apps enterprise customers extend calendaring capabilities in highly specialized and custom ways that meet the needs of their business and employees. For Google Apps domains that have the "Turn on new features" option checked in the Google Apps Control panel, users can see the new Labs page in "Settings" upon logging into Google Calendar. You can add Labs features to your calendar too, such as: Next Meeting, Free or Busy, World Clock and more.