Yes, it does. I run LPCM (due to some occassional flakyness with certain movies and my super multi-blu). Last night I checked and it said 8xLPCM 48khz... or something like that. I remember it showing DTS Master Audio and Dolby True HD before I switched to LPCM.
Hmm... with the firmware I have (which is a bit old), it only says Dolby True or DTS MA... with nothing on the sample rate. And I mean it shows both with the "or", it does not show which precisely. However, if you have it hooked up a certain way with your receiver, your receiver OSD should be able to show you. I have all my video inputs going to my Duo, then the Video out (not the audio only out) is hooked up to HDMI input 1 on my Onkyo. The Onkyo is then hooked up to my display. I get both on screen displays this way.
Same behaviour as with the EDGE (I can only send DTS or Dolby so I don't know 100% for sure what it would do with DTS-MA or Dolby True). I have a very cheap receiver. It only says DTS or Dolby and nothing more. I've blown most my cash on video stuff. That is why it would have been nice if another device could show what was being received.
Many thanks for checking by the way. It's no big deal as I can always use mediainfo to check but it would sure have been convenient!
My gear: Panasonic TH-42PF11EK pro plasma display + TX-P55VT60E -- Iscan Duo video processor -- i1 display 3 colorimeter -- i1 pro 2 spectrometer