Microsoft is now testing Windows version 1909 build 18363.418 which they believe will be stable enough release to manufacturing.
The latest educated guess is this will be released on November 12 as there have not been any show stoppers reported.
Build 18363.418 includes all of the latest 19H2 features as well as the latest fixes included as part of KB4517389.
- Taskbar calendar manager
- Hovering over Start will now expand for all users
- File Explorer will now include Onedrive
- Notifications refinements, less nagging for intervention
Microsoft previously stated, the May 2019 Update (version 1903) and November 2019 Update (version 1909) share the same servicing content. That means they share the same Cumulative Update packages.
Best bet is to install whatever is on Windows Update. Not as well published but Microsoft has done much to harden Windows against malicious intent.
Lately an upswing in Ransomware has managed to make it way into more and more victims. Windows 1903 is more robust and 1909 will be even stronger.