IMpact of Kernal Upgrade in SRM

Hi Experts,

I need to know that in my workplace basis team is planning to perform a Kernal upgrade in SRM.

If they go for it how SRM consultants will come to know what is the application impact related to our current settings

If we need to find out what are the changes that come from one patch level to upgraded patch level where can we find out?

can any one suggest how to proceed in this case?

regards

subbu