https://www.microsoft.com/en-gb/softwar ... /windows10
To accompany this release, new cumulative updates have been released for 1803 and 1809. These add new control over Features Updates making them optional for both Home and Pro users. Windows update will still notify you when your machine is ready for the 1903 Features Update, but you now can decide if/when you want it. This is the 1809 cumulative update.
https://support.microsoft.com/en-gb/help/4497934Microsoft wrote:Starting with update KB4497934, we are introducing functionality that allows you to decide when to install a feature update. You control when you get a feature update while simultaneously keeping your devices up to date. Feature updates that are available for eligible devices will appear in a separate module on the Windows Update page (Settings > Update & Security > Windows Update). If you would like to get an available update right away, select Download and install now. To find out more about this feature, please go to this blog.
The one for 1803 is KB4499183. If you decide you don't want to 'Download and install now' you can continue to check for updates and keep your 1809 or 1803 fully up to date with all the latest cumulative updates for your version.
Only when your version is near the end of support will the Features Update be installed automatically. For 1803 end of service is November 12, 2019.
https://support.microsoft.com/en-us/hel ... fact-sheet