Windows 7 is one highly-expected OS and apparently, the anticipation of potential users is shared and intensified by Microsoft's staff as someone jumped the gun and posted a notice about the Windows 7 RC on TechNet. The listed publish date is May (2009) so that suggests the RC (release Candidate) version of Windows 7 will become available to the public in May, as previous rumors have anticipated.

http://www.tcmagazine.com/comments.php?id=25453&catid=3