I was waiting for this for the longest time and Its finally here! And as it reads @ https://partner.microsoft.com/40084742?msp_id=Windows7: Partners with a MSDN or TechNet subscription can download Windows 7 Beta now. All other partners can download Windows 7 Beta starting January 9, 2009 at 12:00 P.M. Pacific Time.
It is also noted in the windows-7 site on Microsoft.com : http://www.microsoft.com/windows/windows-7/ "Want to try the Beta? Come back the afternoon of January 9."
And in our MSDN downloads, Its already there!
Checkout more info at the http://blogs.msdn.com/e7/ : engineering of Microsoft Windows 7 blog.