Microsoft has removed the install limit restrictions for Office 365 subscribers. This means Home users will no longer be restricted to 10 devices and Personal subscribers can go beyond one computer and one tablet. The catch is that users can only stay signed in on five devices at once. This is an acceptable tradeoff which means subscribers no longer need to manually uninstall their licensed software in order to install it on a new PC. Mac or mobile device.
Home users can now share the subscription with 7 users. All users will have access to Word, Excel, PowerPoint, Outlook and OneNote, along with 1TB of individual storage.
Source: The Verge