Mac users should upgrade to Office 365 in order to get the latest security updates.
The new release will include some security fixes, while the upgrade is free for current Office 365 subscribers.
Mac users can now use the Office 365 desktop app on their Macs and Windows machines.
Macs running Mac OS X 10.9.8 or higher will get a security patch.
Mac and Windows users can download the Office 2016 update from the Microsoft site.