The public preview of GeoFlow is now available here
http://office.microsoft.com/en-us/download-geoflow-for-excel-FX104036784.aspx
I would definitely grab the “Data Explorer” plug in while I were there…(also available here http://office.microsoft.com/en-us/excel/download-data-explorer-for-excel-FX104018616.aspx)
There are plenty of reviews and good tutorials of both products available elsewhere, but in the coming few days I will try to write about where I think these technologies fit in with respect to Self Service BI
business intelligist 