I also wonder about all the other things like when and if there will be a USB out of processed PRIR audio
What would you do with this? There's already the optical digital output of SVS-processed 2-channel stereo sound intended for your headphones, to feed your external DAC/amp instead of the internal built-in DAC/amp. So if that's what you wanted with USB output it's there now.
I remember back in the very old days, I had (in fact still do HAVE) a Carver Sonic Hologram unit (actually, I have TWO different models although I use neither any longer). This was his terrific attempt at trying to produce the sensation of "surround sound field" from stereo speakers. You would sit in your chair in precisely the right place in your sound environment, and your 2-channel stereo speakers would be fed audio processed through the Sonic Hologram processor (100% analog), which was really probably injecting a bit of cross-channel feed from L-to-R and R-to-L with a small delay imposed. The effect (if you got it just right) was to produce the sensation of a "wide 3D-like sound stage in front of you".
It actually worked to some degree, very much dependent on the listening environment and where the speakers and walls were, and where you were placed.
The Carver Sonic Hologram processor was inserted into the "tape loop" of my audio system, along with my DBX 14/10 EQ to provide "tone control". What I did was to analog-record the "processed Sonic Hologram 2-channel stereo analog output, tone-managed by the DBX EQ" through my Nakamichi CR-7A tape deck onto cassette tapes which I then played back IN MY CAR, using its after-market Nakamichi TD1200 tape system and playing through the 14-speaker tri-amplified custom all-analog sound system I'd had installed in my car (a wonderful 1983 Mercedes 380SEC) by a well known high-end after-market celebrity custom audio installer here in LA (named Howard Becker's Electronic Entertainment, back when that kind of thing was all the rage, before the car manufacturers decided to get into the business for themselves and after-market custom audio died).
Remarkably, the recorded processed sound from that Carver Sonic Hologram processor really did make the "virtual 3D-like sound stage" appear in front of me, above the dashboard and right where the windshield was. It was probably the up-firing ribbon tweeters and other dash-mounted speakers which were located in the center and either side of the dashboard that made this possible. It was also undeniable (at least it seemed so to my ears) that I could kind of "locate" where voices and instruments were located within that sound field, left to right. This illusion was absolutely different than simply listening to the original 2-channel stereo audio without the Carver Sonic Hologram processing inserted.
That was the beginning of my love for "high-end sound in my car", headphones, and other alternative substitutes for an actual home theater-like listening environment which I could never really put together. Listening to the Carver Sonic Hologram in the crummy 2-speaker setup of my room with its space and walls was never very effective or satisfying. But listening to a tape recording of the 2-channel analog output through my car's much more contained and closed-in environment, well now it really did "work". The virtual 3D-like sound stage illusion and the seeming ability to "place" instruments and voices in the left-to-right sound field, well it worked great in my car.
Ahh... those were the days.
NOTE: I've toyed with the idea of recording the optical digital output from the A16 (or A8), through the optical input of my PC's Creative Zx soundcard. But it's really intended for "playback" through my Stax SR-009 headphones as represented by the HPEQ in order to facilitate duplicating the original sound of the original listening environment captured by the PRIR, not played back through my car's speakers.
I've not tried this, but because the concept is so different I can't imagine getting the SVS-produced virtual multi-channel 3D-like effect listening to a 2-channel recording of the 2-channel stereo output of the Realiser through the 2-channel sound system of my car (even with its multiple speakers). I would think it depends on the headphones characterized in the HPEQ you use to actually listen, and the whole notion of your ears and headphones... rather than something in the processed sound itself played back through any generic 2-channel stereo audio output system, like your car has.
Nevertheless, an interesting idea to experiment with. Just for grins.