The dev-astating truth: What's left to develop? Send in the machines

Historian Francis Fukuyama in 1992 reckoned with the fall of the Iron Curtain and the replacement of Communist systems behind it with liberal democracies, we had reached the end of history. Can we say the same about software development? Has the arrival of the age of Agile meant that we can now talk about a similar full-stop? Is this the final word in software development? And if it's not, what's going to come after it?