I got the Windows 7 Beta CD and available for download.

  \\apac.dell.com\data\PENANG\SERVICES\TechTrain$\APCC\Enterprise\Software(Vendor)\OS\Windows\Window_7  

Windows 7 Beta and Customer Preview information:

Beta Customer Preview Program

http://technet.microsoft.com/en-us/evalcenter/dd353205.aspx

Springboard Series

http://technet.microsoft.com/en-us/windows/default.aspx?ITPID=sprblog

Beta Forums / blogs

http://social.technet.microsoft.com/Forums/en/category/w7itpro

http://windowsteamblog.com/blogs/windows7/archive/2009/01/09/update-on-windows-7-beta-availability.aspx

http://blogs.msdn.com/e7/

Feedback Program

http://wfp.microsoft.com/

Technet Library

http://technet.microsoft.com/en-us/library/dd266801.aspx?ITPID=sprblog