Great news – Microsoft just announced SQL Server 2012 RTM.
You can already download SQL Server 2012 Data Mining Add-in for Microsoft Office 2010, SQL Server 2012 RTM Evaluation and Microsoft SQL Server 2012 PowerPivot for Excel 2010 . Other download will appear shortly.
Also, for more information make sure to attend SQL Server Virtual Launch event – should be very interesting.
I am especially excited for new SSAS Tabular release. For past few months I started to use DAX more and more and with every day I like it more – it is very powerful and flexible!