Difference between BI content and HANA optimized BI content ?

Hi to all,

Is BW is already have HANA database, what is difference between BI content and HANA optimized BI content.

Can any one explain in general term, I have already gone with SAP HELP but, cant grab more of it.

Does we have HANA optimized BI Content only for DS and FI only.

Regards

Pavneet Rana