Amongst many other major announcements, Google announced at I/O 2014 the arrival of Google Apps Unlimited, a brand-new option for Google Apps for Business customers. This premium version of Google Apps offers plenty of new features for Google Apps at $10 per user per month, making it an extremely attractive option for enterprise customers.

The features included in Google Apps Unlimited are unlimited storage, Google Vault, and advanced Drive controls, auditing, and reporting features, in addition to everything else included in Google Apps for Business.

An important note to keep in mind, for now it is impossible to downgrade from Google Apps Unlimited to standard Google Apps for Business. Obviously this will be addressed in a later release, but it is something to keep in mind until then. Google Apps Unlimited is available in the Billing section of the Google Apps Admin Console.