A real one that’s actually shipping, this time. Sounds like a single channel audio, not per-string like the boutique one we saw recently. I’m even less sure what the point of this one is, though. Story on Gizmodo.
If it’s just sending a single audio channel down a USB connector, what’s the advantage to just using an analog jack connector? There’s potentially quality improvements from getting the signal turned digital as early as possible, but I’d be surprised if it was worth it.