Today, I've tried the DV610's audio setting at Auto(DSD) via a HDMI 1.4 cable to a Denon 4311ci receiver with the DV610 player set to 1920x1080p output, and the 4311 receiver picks up the SACD audio as DSD.
DVD-Audio discs in the DV610 show up as PCM 96 kHz in the 4311 receiver.
If the DV610 audio is set to just Auto, SACD audio shows up as PCM 88.2 kHz in the 4311 receiver. If DV610 is set to Auto(DSD), the receiver just reports DSD without a bit rate (sounds better than the 88.2 kHz PCM signal, but that's subjective).
Again, this is all with the DV610 video resolution via HDMI set at 1920x1080p.