*Update*

The Office 365 upgrade is now complete. New features are now available to users with Exchange Online mailboxes.
--------------------------------------------------------------

Previous Description (2013-09-02 11:02:26):

System Name:
Office 365 (student Email and Calendar)


Maintenance Timeline:
Ongoing, expected to last for the next 12-24 hours


Details:
Microsoft Online Services is currently upgrading the campus Office 365 tenant. This will upgrade student mailboxes to the latest version of Exchange Online. Mail service will not be interrupted.

More details found here:
http://www.queensu.ca/its/news/august2013/office365-upgrade.html