March 6, 2012 - Microsoft released SQL Server 2012 PowerPivot for Excel 2010
March 6, 2012 - Microsoft released Microsoft SQL Server 2012 PowerPivot for Microsoft Excel 2010.
To learn more about PowerPivot check SQL Server Virtual Launch event on March 7th, 2012. This event has 20min session "Rapid Data Exploration: Powerful Self-Service Analysis with PowerPivot".