I wouldn't hold your breath. I was going over the DSP-5500Mk2 sales blurb, which states in black and white "a future software update will enable support for 192kHz". And that was 10 years ago.

Video: Sony G90 9" CRT projector; 100" 16:9 Stewart Filmscreen; OPPO BDP-83

Audio: Meridian G68ADV; Tag Mclaren 100x5R Power Amp; Klipsch Ultra II 5.1 speaker system.