Submission + - OneDrive delivers unlimited cloud storage to Office 365 subscribers (onedrive.com)
Google is also competing with Google Drive for Work, for $10 per month, you get 1TB of space, or if you have 5 or more accounts, then you get unlimited space. Since 5 accounts to get unlimited space is $50 per month, and Office 365 offers 5 accounts for $10 per month total, the Microsoft option would clearly be the less expensive choice. Microsoft also offers a personal account option for $8 per month for a single user, also with unlimited OneDrive storage.
There remains a single file size limit of 10GB per file, it is not clear if that limit will be removed with this upgrade.
How would you use unlimited cloud storage?