The "What's coming after X?" question

What could be say about the question: What's coming after X?
Where X could be:

  • Object-orientation

  • Software engineering best findings

  • Agile development

The context for the question:

  • Asked by blind advocates of X

  • Usually young people (mental youth mainly)

  • Looking for the next sensational fad

The question remains me about the question "What is coming after object-oriented programming?" to an object-object oriented practitioner and author and his reply: "Our industry needs to understand object-orientation in the first place before thinking in what is next" . Or the question "Which mayor techniques do you see coming in the horizon of software engineering" to Dr. David Parnas and his reply "The mayor techniques for software engineering have been already here and for a long time, but have not been fully understood" .