Seems A2B parts have been available for a number of years from ADI but only recently has the datasheet content been released from NDA. So now we can see the details. Although the jitter numbers on the surface don't look particularly attractive (1-2nS) I think this bus could turn out to be interesting for multichannel PCM transmission and the PDM function might turn out to be compatible with low rate DSD.
https://www.analog.com/en/ad2428w/datasheet
Selection Table for Automotive Audio Bus(R) | Parametric Search | Analog Devices
https://www.analog.com/en/ad2428w/datasheet
Selection Table for Automotive Audio Bus(R) | Parametric Search | Analog Devices