Impact of SCM 7.0 upgrade to EHP3 on standard functionality

Hi Experts,

We are upgrading our SCM 7.0 system to EHP3, i would like to know below details;

1) Is there any impact on standard CTM / Optimizer functionality as well as user exits and BAPIs.

2) Any impact on standard BOP and RBA functionality.

3) Any impact on standard DP functionality.

4) Any impact on CIF.

Please help.

Regards

Neelesh.