If a 5.1 Momentary Lapse was in the box, I'd be practically vibrating with anticipation! I've not heard any 5.1/vintage quad/surround Floyd/solo David/solo Roger that wasn't stellar. But as nothing has been announced, I'm just going to continue sitting here quietly and calmly. Having recently upgraded, the Atmos soundtrack on Roger's The Wall concert film is pretty impressive. Similarly the 5.1 audio on the existing The Wall film is already very good, given the lossy codecs etc. Whilst Atmos would be nice, I'd more than satisfied with a lossless 5.1 of the film's audio on BluRay using either DTS-HD MA or Dolby TrueHD.