I have been working as an ABAP consultant for more than a decade. As S/4 HANA is going to be a big thing going forward, I would like to know the scope of an ABAP Consultant in S/4 HANA Implementation. What are the relevant modules/topics in S/4 HANA an ABAP consultant can learn? SAP Fiori seems to be the technical thing at programming level. Is ABAP going to play the same significant role in SAP Fiori development as it is now? Or is it of very limited scope? What are the prerequisites to learn SAP Fiori?
I would like to request the Gurus to help me guide in answering these questions.