Windows 8 build 8220

Windows 8 build 8220 is a build of Windows 8. Screenshots and a video of this build were shared. Although this build was not publicly released by Microsoft, the Microsoft Confidential watermark has been removed in both the desktop and winver in this build. The charms bar and icon set has been updated, except for the Windows logo.

This build is also mentioned in the  file in builds 8195 through to 8331.

cversion.ini
[HostBuild] MinClient=8220.0 MinServer=7100.0