The inital public preview for Office 2013 is available with lots of BI functionality.
Two key points that stake out Excel’s claim to be the BI tool of choice:
Anotherlitlte mentoned Excel beta add in is GeoFlow for geospatial analysis that is closely integrated with PowerPivot see:
Jen Underwood’s blog post:
http://www.jenunderwood.com/blog.htm#PASSandSPC2012
…and, this very detailed post from Patrick Guimonet (in French), which has a lot of screenshots and several long videos shot during the Sharepoint Conference:
http://blogs.codes-sources.com/patricg/archive/2012/11/16/spc12-spc258-geoflow-for-excel-2013-a-new-way-of-exploring-geospatial-data-and-sharing-insights.aspx
If you thought maps in Power View were impressive, just check this out…
(Credit: abstracted from Chris Webb’s BI blog)