From the most recent Schiit video on YouTube, I think they said there are beta test boxes that test the compatibility of Unison output with other non-Unison DACs going out to reviewers. From my understanding these are not beta units of complete Schiit Transports. My guess is those comes later, after they are sure they can make Unison output compatible with the rest of the USB inputs.
So the project is still moving forward, but don't hold your breath, yet ...
So the project is still moving forward, but don't hold your breath, yet ...