Any Info on Bel Canto e.One DAC 3 USB Upgrade?

Wondering if anyone knows when the 24/96 USB upgrade will be available for the DAC 3 and what the cost will be.

I've read in other places it's going to be an external USB powered box that converts to optical, which seems strange to me, as I thought initial reports hinted at async and an internal upgrade. I know the computer audiophile blogger said he heard it, but didn't elaborate much on the sound. Any further info is appreciated.

Thanks!