Updating from office 2016
Taking a page from the Windows 10 playbook, Microsoft is calling this monthly updated release the "Current Branch." The next Current Branch release will be September 22 and will include all the new Office 2016 app updates, according to a September 10 blog post explaining Microsoft's rollout plans.
Office 365 Consumer Subscribers: If a customer joined the Office 2016 Preview through their Office 365 My Accounts page, they can simply uninstall the Office 2016 Preview from Windows Programs and Features and install the production release of Office 2016 from their My Accounts page.
Q: Can those running Office 2016 for Windows preview upgrade directly to RTM version?
A: It depends on how a customer has accessed the Office 2016 Preview.
Commercial Office 365 customers who have accessed the Office 2016 Preview through the First Release program will continue to get the latest updates across their Office 365 workloads, including Office client.
If they would like to revert to the production release of Office 2016 when it becomes available, they can uninstall the Office 2016 Preview from programs and features and download the production version of Office 2016 from their My Software page.Later this month, Microsoft plans to offer Office 2016 for Mac available to those who prefer to buy a single copy outright.