I don't believe there will ever be one anything for anything. I can successfully play SACD and DVD-A with the gear that I have. I'm irked that the technology shifts every few years requiring new gear ... like an HDMI rec'r in this particular case.
The spend to save scenario is killing me.
I still don't know what the highlighted part really means but a Google search for the layout on SACD and Dolby Digital produced the same angles for a seating distance of 8' - 12'.
Watching stuff come and go is making me nuts. I like SACD and DVD-A just fine. Killing it off for something new means I need something new (HDMI rec'r). Then they'll kill off HDMI because it sucks and I'll need something new again. I can't keep up. Good news is that the AES is probably powerless. I mean I doubt they pushed for the MP3 but look around.
I've only been interested in this for a short time. If I had watched things come and go for 25 years I would have lost my marble but good by now.