I'd have to go searching again. I believe it was mentioned during one of their livestreams on YouTube. I had the same question as you originally.Do you happen to know where/when they said that so I can see it?
Makes sense tho, if they're going to have to use a different DAC chip, it wouldn't be "A3" in the sense that we all expect, but a completely different DAC like LiM and MiL