Windows 8 build 7652

Windows 8 build 7652 is the earliest known build of Windows 8, showcased on a post written by Steven Sinofsky on the Building Windows 8 blog, describing the development of Windows on ARM. It is the earliest known build of Windows that is capable of running on the ARM architecture, specifically on the Asus P835 smartphone in this case, which also reveals early support for ARMv6 processors that was dropped in later builds. One image shown features a watered down version of the Windows Task Manager, a version of the On-Screen Keyboard applet from Windows XP, and the Command Prompt. Another image shows the classic Windows Solitaire and a basic dial pad.

Given that it was only shown by a microsoft employee, its unlikely that this build will ever be leaked