A screenshot of Windows 8.1 build 9428 has appeared, although it's not very exciting, showing a "Milestone Preview" in the lead up to Microsoft's BUILD conference next week in San Francisco



From Neowin:

In the lead up to Microsoft's BUILD conference next week, the company is putting the final touches on a Windows 8.1 preview build, which they will be releasing to the public during the conference. The build that might be this very preview, build 9428, that has been spotted in the wild carrying a "Milestone Preview" label on the desktop.

  Windows 8.1 build 9428 unexcitingly spotted