You say this as if it's a bad thing, I think that would be mission accomplished for Beeper... tbf, though I suppose their moment would be over by then.
For all Android users this would mean there's now an official client.
For Beeper devs this means there's less RE needed for their client.
Even if Apple released an official app, Beeper is still useful for aggregating other services, something Apple will never do.
I see noone but Beeper winning in this game barring legal skirmishes.
If anything judging by Apple's Android apps recently, especially with my personal experience with their Apple Music app I would say they have a really bad track record thus far. It's a really buggy and almost unusable mess.
This is unrelated but I was actually duped by Apple Music, I intially thought that the audio quality was noticably better but as it turns out it was actually just louder. Raising the volume made YouTube Music sound just as good.