In fact, this is a mirror image of two different groups labeled FAST and SLOW channels. Build 18343 is not really the latest version of the Slow channel.Windows10 May 2019 (Version 1903) The RTM version number is Build 18362, so this image version is more often used as a placeholder.
The Fast channel has already started testing the 20H1 branch version, and this feature update will go live next spring.MicrosoftThe 19H2 update is also scheduled to be released later this year, but the Fast channel should not be re-rolled back to 19H2. I believe it should be concentrated on the Slow channel, so the 19H2 development branch will not be updated much. It should be The system is tuned and bug fixes.
Currently, the ISO image of Windows 10 Build 18912 is downloaded by three SKUs for Windows 10 Insider Preview, Windows 10 Insider Preview Enterprise and Windows 10 Insider Preview Home China.Interested users can go here to download.