Supposedly, Warner Music has finished encoding its entire music library to MQA, although as we have seen one doesn't know until you listen which mastering of a given recording you will get. I suspect Tidal just keeps adding them on a daily basis, but whether or not MQA titles end up in the "Masters" section is pretty hit or miss.
Thx. That's sort of sucks on one hand and then good on the other hand that at least they are adding more titles. Hopefully Tidal starts identifying them for us!