And Redstone 5 will roll out in October 2018. Redstone 4 encompasses the builds, and features, that will roll out in the Spring Creators Update. Redstone 3 represents the final build that was made available as the Fall Creators Update. Lots of different builds will be grouped under Redstone 3. For example, builds belong to Redstone 3, or Redstone 4, or Redstone 5. A Redstone build is also accompanied by a number, a much smaller one that those given to builds. Microsoft gives its builds a name it did the same for Windows 7 and it does so for Windows 10 but the name ‘Redstone’ also denotes something else feature roll out. It’s clear that Microsoft is no longer working on Windows 7 or 8 so any builds, regardless of their name, will be for Windows 10. Since all Windows 10 insider builds are called Redstone, you might wonder what the point of it all is. A Windows 10 Redstone build is just that an insider build that hasn’t been pushed to the release channel. Redstone is a code word that Microsoft uses for Windows 10 builds that have not yet been released. The build number may change but it’s always called Redstone for some reason. You might have read the word ‘Redstone’ next to a Windows 10 build’s name.