SQL SERVER - Inline Variable Assignment in Sql Server 2008

In SQL 2005 variable assignment is done by:

DECLARE @CurrentDate_in_2005 DATETIME
SET @CurrentDate_in_2005 = GETDATE()
SELECT @CurrentDate_in_2005 AS CurrentDate_in_2005


But in SQL Server  2008 we can do it in one line:

DECLARE @CurrentDate_in_2008 DATETIME = GETDATE()
SELECT @CurrentDate_in_2008 AS CurrentDate_in_2008