With Plus set to arrive next month, Apple is making sure Roku owners will be ready to stream its original programming. Today, the Apple TV app is launching for Roku streaming players and Roku TVs. The app will be available from Roku’s Channel Store when it goes live.

from https://www.theverge.com/2019/10/15/20915337/apple-tv-app-roku-now-available-original-tv-shows-features