The Apple Sports app went from terrible to my favorite app overnight... because it seems they're using APIs not available to regular developers.

So the Apple Sports app can now launch Live Activities without you opening that app. So any sports team I follow, will automatically pop up a live activity when a game starts without having to have opened the Sports app recently. I believe this is the only app, even the only Apple app, that can do this. It also gives haptic feedback on the watch (with no notification) when the score changes during a game that has a live activity, and when you look it shows what had just happened in the game. I also believe this is the only app that can do this. Am I wrong? These features aren't available in other apps right? Because it's incredibly useful and exactly what I had wanted Live Activites, and my Apple Watch experience to be.