Ambrish posted a great new article on the Windows Azure Team Blog on new functionality coming in SQL Server 2012 Management Studio for Federations. Here is the full writeup;

http://blogs.msdn.com/b/windowsazure/archive/2012/02/15/managing-federations-in-sql-azure-with-the-sql-server-management-studio-of-sql-server-2012-rc0-new.aspx

You can download the tool form SQL Server 2012 page;

http://www.microsoft.com/sqlserver/en/us/future-editions.aspx

Thanks

-cihan