Apple TV takes on 4K streaming: spiffy catch-up to Amazon, Roku

Columnist Kim Komando helps you navigate services, hardware and content if you're ready to ditch the TV bill. The new Apple TV 4K device ($179-$199) brings Ultra HD 4K video with high dynamic range (HDR) to the iTunes store and other apps. Apple TV is ready to take on 4K. The newest Apple TV devices, out Friday starting at $179, deliver 4K video for the first time. So if you have one of these high-end TVs, you are not taking full advantage of its capabilities if your Internet streaming device only delivers HD resolution.