Fresh off the press today!  Here are the links you need:

Server announced here:
http://blogs.technet.com/b/windowsserver/archive/2012/05/31/windows-server-2012-release-candidate-available-now.aspx

Client announced here:
http://blogs.msdn.com/b/b8/archive/2012/05/31/delivering-the-windows-8-release-preview.aspx

Windows Server 2012 Release Candidate Download
http://technet.microsoft.com/en-us/evalcenter/hh670538.aspx?ocid=&wt.mc_id=TEC_108_1_33

Windows 8 Release Preview Download
http://windows.microsoft.com/en-US/windows-8/iso?ocid=W_OFF_W8P_TechCenter_ISO_EN-US

Mine are downloading right now.  What are you waiting for?

Enjoy!