An ETA for a fix would be nice, but we really needed the fix weeks ago. It's been a month since you reported you've "finally been able to reproduce the loss of audio on a reference board here". It's absolutely incredible that you have not produced a fix by now. Or at the very least some decent compensation for your customers who wasted money on this broken product.
From a small start-up or a no-name OEM I would expect this, but I thought Intel was a respectable company.