https://www.bleepingcomputer.com/news/microsoft/windows-10-november-2019-update-is-now-available/

Microsoft has officially released the November 2019 Update for Windows 10 and is in the process of rolling out to users. This update will upgrade the operating system to Windows 10 1909 and is an optional feature update that will not be installed automatically for users running newer versions of Windows.

As previously reported, Windows 10 November 2019 Update is not a big release and it doesn't come with any major improvements.  Instead this should be considered a service pack that includes bug fixes and mostly feature improvements.