USB 3.0 has zero benefits in usable throughput, USB 2.0 high-speed can already do DSD1024.
Only iFi is pushing (unnecessary) 3.0 so tough luck. Won't happen any time soon.
Hm, maybe i should try to make myself clear:
(1) When I said that there are benefits for changing to usb 3.0 in my setup like resolution, i didn‘t mean resolution in the sense of bitrate but in the sense of „hearing things that i didn’t hear before“ at the same bitrate in comparison to 2.0., so maybe it should be called the „total amount of sonic information“ that increases (i have no idea why, maybe is just the better power connection ..?)
(2) I don’t think that i internalized the ifi marketing blurb to a point where i placeboed myself into hearing it, but despite hating spending so much money on cables, everytime i replaced a 2.0 with a 3.0 cable in my chain, i thought „Wow – that sounds better!“ and than there is the question of how far this can go (for the same reason i replaced an intonia 2.0 by the igalvanic)
(3) At least for the holo spring it is best not to use the USB 3.0 but the i2s input option, so i don’t claim that you should go 3.0 all the way, but only up to a converter like the matrix-x and then change to i2s; i somehow feel that the matrix amplifies the (small?) differences between 2.0 and 3.0, especially when you use a good hdmi cable.
(4) Though 2.0 is still clearly dominant, for those who don’t want to go via ethernet, more USB 3.0 options arise even at the top end, so not only the holo springs have it, the new antelope amari has an 3.1 USB input.
Cheers,
Marc