When will the multiview feature be activated?

Saw something somewhere (outside links aren't allowed here) that showed a new feature where you can watch 2 things at once via your X1 box. I think right now it's sports only, last night it said no events are available for multiview. (even with 2 baseball games, 2 College football games, and 1 NFL game running concurrently)

So WHEN will I be able to test this feature out?

Before we see a standard copy and paste answer (which is fine to educate people about the new feature) - I want everyone to know that my question is "WHEN" will it next be available. Today being Friday 10/18/2024

Will it be tonight, tomorrow, or what date in the future and for which events?