DIFFERNCES BETWEEN SAP BW 3.5 AND BI 7.0

Hi gurus,

This is prasad. Presently iam working with

BW 3.5 version. I want to know what r the differences between sap bw 3.5 and sap BI 7.0
please respond as early as

possible. if possible send a mail to dvsrk_prasad@yahoo.com