I have been working with "My Brother in Audio, Dave Elledge (PI Audio Group)" on a few new USB products...
The new USB cables include a "Split Power & Data" design as well as a short, USB "Dongle" used very recently at the 2016 Newport Audio Show on Vinnie Rossi's DHT Pre LIO integrated amplifier with a µRendu...
Here's a very recent question posted by Jonathon Janusz on Vinnie Rossi's Circle. In fairness to Vinnie, I brought it to my circle since these are cable questions...
Hey, Pete! Glad you guys had another great show! How about some of the following (for me and or the crowd watching at home):
1) Price?
2) Can it also be made in more traditional cable lengths?
3) Is this cable across the board better as a dongle as short as it can be made, or is there a sweet spot in cable length for performance like some of the other USB cables on the market?
4) Any details to share in regards to the build of the cable (connectors, termination, cryo, etc.)?
5) I'm guessing stiff vs. flexible is solid core vs. stranded wire? Any performance difference between the two?
6) I'm assuming that this cable is designed not to pass power via the USB bus, or are the power connections still there but unused in the case of the uRendu?
That should get the conversation started.
Feel free to move some of this to a thread in your circle if more appropriate to break off this topic so this thread stays on track with reports from the show. 
[Edit] Oh, and say Hi to Dave for me! 
Hey Jonathon-
Here's some answers to your questions -
1) Price? -
$1492) Can it also be made in more traditional cable lengths?
YES, but the short 7-3/4" dongle sounds really good & other lengths need to be a fraction of a certain length to sound its best (BTW- 1 meter length does not sound so good, but 1.5 meter does!)3) Is this cable across the board better as a dongle as short as it can be made, or is there a sweet spot in cable length for performance like some of the other USB cables on the market? -
See Answer #2 above...4) Any details to share in regards to the build of the cable (connectors, termination, cryo, etc.)?
Cryo'd copper wire with "organic" materials that are compatible with USB signal transmission and does not degrade the sound...5) I'm guessing stiff vs. flexible is solid core vs. stranded wire? Any performance difference between the two?
We're (Dave E & I) are still working on the flexible design... Wire remains the same between the two but making the stiff version is easier but not practical for most users. The production version will be flexible...6) I'm assuming that this cable is designed not to pass power via the USB bus, or are the power connections still there but unused in the case of the uRendu?
Most devices require a 5V handshake to get the process going and very importantly, there is a reference ground leg... Therefore, the power connection is still there but not really used.The production versions can be purchased at Triode Wire Labs or PI Audio Group...
I also have special "regular" USB cable debuting very soon that "splits" the power & data legs, in 0.75m & 1.5m lengths...
Thanks,
Pete