See http://windowsteamblog.com/windows/b/bloggingwindows/archive/2010/07/12/public-beta-now-available-for-windows-7-and-windows-server-2008-r2-service-pack-1.aspx and http://technet.microsoft.com/en-us/evalcenter/ff183870.aspx?ITPID=wtcfeed. You can download it after a short survey (you must confirm you're an IT pro). Don't bother, however, if you are not really interested in compatibility issues; there are no groundshaking innovations you'll miss. Also note that this beta is only available in five languages."I think there is a world market for maybe five computers. (Thomas J. Watson, Sr.)