Microsoft never sleeps. Even before the Windows 10 Fall Creators Update was rolled out, the company began work on the next major update to Windows 10, code-named Redstone 4. As it did with the Windows 10 Fall Creators Update, Microsoft has been releasing a series of public preview builds to members of Microsoft's Insider Program.
What follows is a list of every preview build of Redstone 4, starting with the most recent. For each build, we've included the date of its release and a link to Microsoft's announcement about it. We've also kept the list of all the preview builds that led up to Windows 10 Fall Creators Update (Redstone 3) and the Windows 10 Creators Update (Redstone 2), which are below the builds of Redstone 4.