There’s been no sign of any official news or Windows 8 media, but that hasn’t stopped talented designers pulling together their own. This is 8 wallpaper windows 8 ...very hot:

Windows 8 wallpaper
8 PNG | 5.23 MB
HotFile:
Code:
http://hotfile.com/dl/42870417/68aea42/Window8_WP.rar.html
FileServe :
Code:
http://www.fileserve.com/file/DxmDKD7