Now that the two product lines are separated and tracked separately, what needs to happen is that users who previously signed up for notices about 2016, need to separately sign up for notices on 2019 (IF, and only if they are interested in 2019). Anyone who applies this update to a retail/volume copy of 2016 will get updated and their license converted to 365 subscription, in other words they will be prompted to start paying subscription, when before they had one time purchase license. The email advised me that update 16.18.0 Build (18101400) was available for Office 2016 I repeat the email says an update for '2016'. One thing still needs to be fixed however, as of today (Oct 17, 2018) I received a MU update email because I am signed up to receive notices about Office 2016. MU Editors: Thank you for splitting out 20 onto separate pages.