Microsoft has announced that the latest Windows 10 Insider Preview Build is ready for download for folks who are opted into Skip Ahead. The new Build is 17639 (Redstone 5) and one of the big updates that lands with this build is some major improvements to Sets and Tabs. The dragging and dropping of app tabs within and between Sets windows

Source: Hot Hardware – Microsoft’s Latest Windows 10 Preview Brings Improvements To Sets And Tabs