Straight from Tidal's website on what companies are currently working with Tidal..and look what it says in the last sentence. Also notice whose name is missing...Your move astell and kern.
TIDAL TIDAL ON YOUR DEVICE GENERAL
Which Home Audio Players/Partner Companies Will TIDAL Be Available On?
TIDAL already has integration agreements made with 35 of the world’s most respected audio brands, including: Anthem, Airable by Tune In Media, Audeze, Audiovector, AudioQuest, Auralic, Aurender, Autonomic, Bel Canto, Bluesound & NAD, Dan D'Agostino, Definitive Technology, Denon HEOS, DTS Play-Fi, Dynaudio, Electrocompaniet, Harman Omni, HiFiAkademie, ickStream, JH Audio, Linn, McIntosh, Meridian, MartinLogan, OPPO, Paradigm, Polk, Pro-ject, PS Audio, Raumfeld, Simple Audio, Sonos, Steinway Lyngdorf, Wren Sound Systems with more to come.
These integrations are ongoing and will be available soon. An updated status will be available here in the help center.
FYI, I do work for one of those companies mentioned in the list and we already have implemented Tidal in our software, and it's out for almost a year now.
Also some others have already done the same.
So this info is outdated.