The Raytraced 3D audio should be speaker setup agnostic. Sony's own HRTF being mostly headphone centric at the moment. They also said it's working with stereo speaker setups, but has sweet spotting. Also sounds like HRTF for home theatre setups may happen later down the line.
EuroGamer - Digital Foundry has a pretty good article up based on the video
Kinda sounds like this " Tempest Engine" is an evolution of AMD's TrueAudio.