The recent update to the Google Calendar interface is now the default for all Google Apps domains. Some of the changes include a change to colors, less white space and the ‘Create event’ link is now a button. The link for ‘Tasks’ has also been removed and is now a calendar.
Previously, this new interface was only available to domains that had the ‘Enable pre-release features’ checkbox enabled in the administrator control panel. The new interface will now be the default, irrespective of this setting.
For more information: