Microsoft has released a new build for Windows 10 Redstone 4 build 17083 for the fast ring. This build includes several fixes & improvements, as well as two new features, has been added in this build. 1. diagnostic data tools (Announced earlier as on 24th Jan 2018) & font page opting has been moved to windows settings section.
However, Microsoft has decided to remove sets from windows Redstone 4, if you are seeing sets currently on your Pcs with the current public release builds you will lose it after this update. But if wants the sets back on your Pcs you will have to wait until the release of Windows Redstone 5 developments.