Windows 10 build 16199 (rs shell vcoreux dev)

Windows 10 build 16199 (rs_shell_vcoreux_dev) is an unleaked build of Windows 10 Fall Creators Update. Two animation  images showing the buildtag of this build were originally posted in the release announcement of build 16199, but the images were later removed. A copy of these two images can be found on the Chinese website ZOL.