UHS-I 160 MB/s?

[Walter Schulz]

In other news Western Digital/Sandisk introduced another 400 GB UHS-I card with a new SD-card definition called A2 (setting standards for minimal IOPS, defined and documented by SD Association).
Marketing hot air galore: https://www.sandisk.com/about/media-center/press-releases/2018/western-digital-transforms-the-mobile-experience-with-new-high-performance-solutions-designed-to-address-today-and-tomorrows-consumer-demand-for-high-quality-content

The thing puzzling me is alleged transfer speed well beyond UHS-I SDR104 definition (104 MB/s): 160 MByte/s.
According to WD/Sandisk you will need a (new?) cardreader able to support this mode.

Never heard about this mode before and unable to find anything resembling a technical specification. Grateful for any hints and - cream on top - about existing devices other than cardreaders able to do 160 MByte/s.