Three things spring to mind, for me at least.
1. No matter what functionality improvements are made, many of these boxes died for no apparent reason, and many users were stranded by their dealers. Long term reliability would have to improve massively with a decent support system in place for them to have any hope of rebuilding the Zero name. It was outstanding for the price - but long-term use proved it was junk at any price for many people.
2. I'm wondering... looking at those images, and the fact that none detail the innards - what are the chances that the DAC PCB remains the same, with the USB functionality taken care of by a second board that converts it to S/PDIF and injects it to the socket?
3. It sounds like they are accepting that the heat output of the unit has caused problems in the past, as they are enlarging the heatsinks. Do we think bigger heatsinks are going to help, or does the casing require a better ventilation system?
I know the appeal of the unit to those new to the hobby, or working with a limited budget. But after seeing the fall from grace on here, I doubt I'd part with $50 for one delivered...
I'll bet I could put a gun to your head and threaten your Dog's life and you wouldn't buy another ZERO!
You've been there, you've done that, and you have two Tee shirts to prove it!