Ton's siggraph talk: BGE's Future filed under "Challenge"

OK, I’ve only seen the PDF of the slides from Ton’s siggraph talk, but the bit that concerned me was the end section titled “Challenges”, the first of which is a bullet point titled:

“Future of the game engine”

This sounds rather ominous. Does anyone know more about what he talked about here?

Can you link the pdf you saw?

I should point out here, without having read the article, that the Blender foundation could simply scrap the GE, and others would continue it’s development. The GE isn’t going anywhere.