Apr 21, 2010 - SQL Server 2008 R2 released to manufacturing
April 21, 2010 - Microsoft announced today that SQL Server 2008 R2 was released to manufacturing. MSDN/Technet subscribers will be able to download it starting May 3rd, 2010. You can download evaluation versoin of SQL Server 2008 R2 from here:
http://www.microsoft.com/sqlserver/2008/en/us/R2Downloads.aspx
You can find more information about SQL Server 2008 R2 on special SQL Server launch website:
http://www.sqlserverlaunch.com