SQL Server 2012 RTM now available on MSDN/TechNet

You can now download all of the latest RTM editions of SQL Server 2012 if you have a currently active MSDN Subscription.

http://msdn.microsoft.com/subscriptions

You can read more about the new features in SQL Server 2012 here:
http://www.microsoft.com/sqlserver/en/us/get-sql-server/try-it.aspx

SQL Server 2012 Express Edition

For those of you looking to download the Express edition, you can do so from this URL: http://www.microsoft.com/sqlserver/en/us/editions/2012-editions/express.aspx