It would be great if Roon implements Atmos.
If anyone is interested in calibrating their Atmos speakers with REW, there’s a link in this video for 9.1.6 TrueHD “Lossless” Atmos sweeps with -31 dialnorm setting (so no volume dimming by AVR loudness management) playable form a PC (HDMI passthorugh) or Bluray player:
