Apparently you won’t even have to wait until January to get your hands on the Windows 7 Beta, as there’s already been an ISO file leaked to several torrent trackers.
The ISO appears to contain the Windows 7 M1 build (7000) highlighted by Paul Thurrott on SuperSite. So far the new build seems to perform slightly better than 6801, and
memory usage has been improved. A number of previously hidden features like the iconized task bar are also now active.
Reported from Download Squad