Yesterday Jeffrey Snover of the Microsoft Server team announced that Windows Server 2012 is RTM. You can read his blogpost here.
So save the 4th of september in you calendar. Microsoft will also host an online launch event to celebrate this great big day.
See also: http://www.microsoft.com/en-us/server-cloud/new.aspx
So we have just to wait a couple of days more before the real RTM version of Windows Server 2012 is there! 😉