Windows 7 RC on April 30 for MSDN & Technet Subscribers & May 5 for Pubic
Windows Team Blog Published a Blog Post yesterday that Windows 7 RC is on track for April 30th for download by MSDN and TechNet subscribers. Broader, public availability will begin on May 5th.
Read Complete Post Here http://windowsteamblog.com/blogs/windows7/archive/2009/04/24/windows-7-release-candidate-update.aspx
They are not talking anything about Server Version which is called as Windows Server 2008 R2 but I hope that will be announced soon.