https://wccftech.com/windows-10-rs5-build/

Microsoft appears to be quite busy today. After rolling out a cumulative update for an older Windows 10 version and dropping ISO images for three Windows 10 RS5 Preview Builds, the company has just released a new Preview to Windows Insiders. Since the company rarely releases Previews on a Tuesday, this week’s release would surprise Windows 10 Redstone 5 testers who are usually made to wait until the midweek with builds often getting pushed to the end of the week due to a slew of bugs.

But, not today. Windows 10 Insider Preview Build 17728 is now out to the Insiders in the Fast Ring. If you have signed up with the Windows 10 Skip Ahead program, this build won’t be available to you since you will now only be testing builds from Windows 10 2019 editions.