Google announced that it's rolling out an updated version of Gmail Contacts for Google Apps. In addition to improvements made to Contacts for regular Gmail users last summer, the new version comes equipped with some business-specific features.
For example, users can add new contact info that will default to "work" rather than "home" field types. Users can view contact details from the domain directory along with the contact details they added themselves. You can also add contacts from the domain directory to your "My Contacts" list with one click.
There is a new group management feature that lets you add email addresses to groups, and pick from a contact's multiple email addresses to use on a group-by-group basis, and you can revert changes to you contacts for up to 30 days.
Admins can enable new the new interface under "Service Settings" and "Contacts". That's in the next-generation admin control panel. Google notes that it could take up to an hour for users to see the changes.
Google outlines the differences between the current and the next-generation control panel here.