Difference between Dashboard Designer 4.1 and 4.2 versions

Hi All,

     Right now i am using SAP Dashboard Designer 4.1 SP7.   Planning to update to SAP Dashboard Designer 4.2

Are there any significant changes with the new version?

My BI Server is still 4.1, Can i just update the dashboards designer to 4.2 ???

Any kind of information is appreciated.

Thanks,