SQL Server has been released for General Availability as of April 2 2012. You are able to purchase and download the latest version of SQL Server 2012 now.
More information is available at the SQL Server Team Blog on SQL Server 2012.
I am a Microsoft Data Platform MVP as well as a Microsoft Certified Master working as the Principal Consultant here at SQL Masters Consulting. When I am not working with the SQL Server Stack I like to get away to the Snow and spend time Snowboarding.