uniqueidentifier Datatype for SQL Server - is it on the road map?

uniqueidentifier Datatype for SQL Server - is it on the road map?

  
Is uniqueidentifier datatype on the road map for SQL Server?

Why? if you use GUID for the primary key, using uniqueidentifier is preferable , it is 16 bytes vs VarChar(36) which is 36+2 = 38 bytes!