Microsoft says that several changes designed to make Office 365 client licensing technology more reliable for subscription-based Office clients like Office 365 ProPlus will be rolled out during August. The changes are designed to remove prompts when deactivating Office installations, as well as automatically sign out users when the sign-in limit is reached. Microsoft also added a new user activity-based expiration policy for Office 365 groups in private preview, available for select Azure AD Premium customers and allowing for automated lifetime renewals without the need of any user intervention.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-to-roll-out-office-365-client-licensing-changes-in-august/