So far here is every Roku Channel that supports 4K content:
4K Spotlight
4KUniverse
Roku Media Player
500px
Flickr
Picasa
iFood.TV
Toon Goggles
Ultraflix
Tastemade
TripSmart.tv
Aquarium Screensaver
Smithsonian Earth
CurisoityStream
UltraFlix 4K
Fandango Now
Vudu
Plex
Amazon Video
Netflix
Youtube
Here are a few of the new 4K Roku apps since last time we updated this list:
UltraFlix
UltraFlix features an extremely diverse selection of movies from Paramount, Alchemy, and other large studios.
TripSmart.tv
Free Travel shows, Virtual tours, Guides, Tips and more on All key destinations in US, Europe, Asia, Africa and the world.
Tastemade
The best of Tastemade, all in one great app: Entertaining food and travel shows, awe-inspiring original series, tasty recipes with video instructions, and easy to follow cooking classes.
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