Dolby TrueHD would be the bee's nees... but something tells me Ninty's gonna do the ole OG Dolby Digital and perhaps some DTS here n' there. Correct me if I'm wrong, but the Wii U would be the only console to have the audio processed through a hardware DSP and output it digitally through whatever dolby they choose (please no PLII again ;-P). The PS360 all had the audio processing done in CPU cycles... Who knows about the OG Xbox