Automatic updates for Office 365 Pro Plus customers will begin early next year," a Microsoft spokesperson confirmed when I asked.
Microsoft made the Office 2016 for Windows release available to MSDN subscribers on September 22.
If you have an Office 365 for business subscription, see Upgrade to Office 2016 using Office 365 for business Office 2016 is already included in your subscription.
Microsoft delivers first public preview of Office 2016 for Mac Microsoft has released the first public preview of Office 2016 for Mac, its updated Office suite for Mac OS 10.10 users, which is due out this summer.
Read More "For Office 365 Pro Plus subscribers, administrators can opt to upgrade by manually rolling out to their users with Office deployment tools available today, September 22.
Those with Office 365 Pro Plus SKUs -- meaning Office 365 Enterprise, Midsize and Education -- are on the Current Branch for Business.
This means these users cannot upgrade to the new Office 2016 for Windows bits right now unless the administrators change the update branch to be used by some/all of their users to Current Branch.