Apple Inc. unveiled its long-awaited video streaming service on Monday, featuring original programming and offering an ability to purchase channels like HBO and Showtime from within Apple's platform. Apple's original TV offering, as well as the new Apple TV+ service, will play nicely with other offerings in the media landscape. Users will be able to watch Apple TV's bundled content on Roku Inc. and Amazon.com Inc. streaming devices and also on various smart TVs. The company brought on stars from many of its forthcoming shows, including Reese Witherspoon, Jennifer Aniston and Sara Bareilles, to preview the programming. Apple TV+ will arrive in the fall in 100 countries, and content will be available for download. Apple didn't discuss pricing for the service. Shares are down 1.8% in afternoon trading, while Roku's stock is up 3.5%.