Leaked on 04/april/2011
Finally the leaks started

File name: 6.1.7850.0.winmain_win8m1.100922-1508_x86fre_client-enterprise_en-us.iso
File size: 2.45 GB
MD5: EA2DCFADA6BBA517A0A0649D15E1EB3D
More info and torrent here: http://www.techspot.com/news/43264-leaked-...build-7850.html