Microsoft has updated its Partner Program website on the release of Windows 7 RC. It’s apparently available for download for MSDN and TechNet subscribers although I haven’t seen it appear on my MSDN account yet. For the public release, mark May 5, 2009. According to Windows7Center, TechARP Gold partners have been given the build along with an extended image of 7.8GB and is marked 7200 or 6.1.7200.0 to be specific according to some sources.
More updates as they come in.