Editions included:
Google Apps for Business, Education, and Government
Release track:
Rapid release
For more information:
http://gmailblog.blogspot.com/2013/05/a-new-inbox-that-puts-you-back-in.html
whatsnew.googleapps.com
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5 million businesses and growing
A new Gmail inbox option is now available to Google Apps for Business users to help keep different types of emails (messages from friends, social notifications, deals and offers, confirmations, receipts, etc) organized. You can customize your experience by simply choosing the categories you want. Rapid release users can enable the new inbox by clicking "Configure inbox" under the gear menu in Gmail. The new inbox is also available in the Gmail for Android 4.0+ and Gmail for iPhone and iPad apps.
Live Updates from Google
Share Docs, Slides and Drawings with people who do not have a Google Account - October 07, 2013
Domain labels, Mobile updates and a new API for using Google+ at work - August 14, 2013
Monitor user logins, storage consumption and apps usage with the Admin SDK - October 01, 2013