The most striking feature of Windows 8 Build 7850 is the Metro UI, designed with a focus on touch and modern design principles. This interface was revolutionary at the time, moving away from traditional start menus and emphasizing live tiles for a dynamic user experience.
Windows 8 Build 7850, leaked in early 2011, is one of the earlier builds of Windows 8. It showcases the direction Microsoft was heading with the new operating system, emphasizing touch capabilities, a modern user interface (which would later be known as Metro UI), and improvements under the hood. download link windows 8 build 7850 iso