New
#20
Found More Info--Twitter says this .447 was released for Insiders on the Slow Ring
Cumulative Update KB4022716 for Windows 10 Insiders in Slow ring Insider - Windows 10 Forums
Dona Sarkar means that this update is for the main stable branch and will also be released to the Insiders slow ring branch to get Insiders in the slow ring on a certain base for future Insider updates which increments critical tests to ensure the stability and proper function of the new framework. As well as "Josey Wales" says: To keep up to date with the latest Windows 10 Update fixes.
Sorry, I have to disagree. This is a quote from Dona:
If you are in the Slow ring, we’ve released KB4022716 to keep you up to date with the latest Windows 10 Creators Update fixes as we prepare to release a new Windows 10 Fall Creators Update build in the coming weeks. As a result of receiving this update, your PC will be required to reboot to complete the update.