Plans for Multi-Threaded game code

This is a question directly for Epic, what are you short and long term plans for converting the game code (AI, animation, streaming, physics, Blueprints, etc) of UE4 over to a Multi-threaded job system? It looks like some initial framework exists for this but I can’t see anything about it on the Roadmap.

Now that we’ve got multi-cores as standard on consoles, mobile and PC it’d be a waste of horsepower not to use this, or at least explore using all available threads more fully.