Official Google Enterprise Blog: Google+ Pages now available with Google Apps:
"Just over a week ago we opened the doors of Google+ to Google Apps users, and today we’re welcoming the millions of organizations they’re a part of. Now your business, school or nonprofit can create its own corner on Google+ with Google+ Pages.
A Google+ page is your organization’s identity on Google+. Your business, school or nonprofit can post updates and news, send tailored messages to specific groups of people, and engage in conversations with customers and followers."