Remember, remember, it's now called November: Windows 10 19H2 update has a name
https://www.theregister.co.uk/2019/10/14/windows_10_november_2019_update/
Microsoft has given the next version of Windows 10 a name. 19H2 will now be known as the November 2019 Update and is due to land any day now.
Build 18363.418 is, as far as Microsoft is concerned, the final version ahead of release, although the company will continue to emit updates as part of its "normal servicing cadence".