Apple has two hundred billion dollars in cash sitting in a bank account, a fitness ecosystem, and deep experience in fitness and video production. They've announced that the initial set of programs will include cycling, treadmill walk & run, yoga, core, strength, rowing, HIIT, and cooldown. They're planning to add new workouts every week, and have popular, properly licensed music (Peloton spent years illegally playing music, before switching to no-copyright music for a year. Today its in a better place).

I would not bet money on Apple losing on class quality, let alone variety.