Rafal just wrote a 1500-word commentary on Microsoft most recent announcements about the upcoming release of SQL Server 2012, which used to be known as SQL Server Codename “Denali”. That article covers Power View (previously known as “Crescent”), PowerPivot 2, Business Intelligence Semantic Model (BISM), and the new tabular mode of SQL Server 2012 Analysis Services.
The article can be accessed by clicking here, or by navigating the Knowledge/BI menu.