The good news is that from May 5th '09, the Windows 7 RC will be made available to general public too. So remember to visit the Windows 7 site and download this wonderful OS.
Note: Windows 7 RC will expire on March 1, 2010 after which the system will reboot every two hours. The license of windows 7 RC will expire on June 1, 2010.
For more info, check out the Microsoft Press Release over here
Also check out Windows 7 Release Candidate 1 impressions, insights, and expectations