I tend to agree with Check Airman, most of the changes are to non critical systems.
Couple of things about Cvivi’s post. The ADIRS horn is very loud and you can most certainly hear it from the flight deck. If it goes off and you don’t know what it is you most certainly will be asking questions! Second, When Airbus talks about the squawk it’s talking about the actual numbers, not that you haven’t turned on the transponder. If you haven’t turned it on, you will get a memo message to remind you that it’s switched off.