Microsoft is now rolling out Windows 10 build 19608.1006 as cumulative update KB4557426 for devices enrolled the Fast ring of the Windows Insider Program. This is the preview number 15 releasing to testers, and it’s a minor update to resolve a single issue.
Update KB4557426 doesn’t increase the build number, and according to the software giant it contains an undisclosed fix to improve the overall reliability of the operating system.
Download Windows 10 build 19608.1006
The preview is available immediately through the Fast ring. This preview build will download and install automatically on your device, but you can always force the update from Settings > Update & security > Windows Update, and clicking the Check for updates button.