Another WIndows 8 leak unfortunately, for Microsoft. The rumoured Windows 8 which is currently in the works (Build 7955) was thought to boast a new Metro UI element in the user logon screen. No one had prove of this except for a screenshot until this video surfaced.

Microsoft had been doing their best to try to keep Windows 8 development tight, but it is still out on the web and given that Windows 8 Build 7850 is already now available for download (simply search 6.1.7850.0.winmain_win8m1.100922-1508_x86fre_client-enterprise_en-us.iso on any torrent site if you're interested), the cat's out of the bag.

Many thanks to Jeff for the tip!