The Insider News

ZDNet[^]:

For users with an Office 365 Home Premium subscription, as the expiration date of that subscription approaches, users will receive notifications inside the Office applications and via e-mail to remind/nag users about the approaching expiration date. Once the subscription expires, the Office apps will enter a "read-only reduced functionality mode." This means users will be able to view or print documents, but won't be able to create any new documents or edit existing documents.