That version is not showing up on the twitch launcher since you released it 1 day ago

Thing is I have been waiting over two days for answer on why and still no message or fix

I am Having the same issue. Can't see it on the launcher for 1.12.1 or 1.12

Latest shows up for me now. I have no control over what files show up and when, if it's still not working for you, take it to Twitch support.