In HDGURU's article he says that the 4k apps from Ultraflix, Amazon ect are "forthcoming".

The H7 ships with pre-installed apps including: Netflix, YouTube, Amazon Instant Video, Vudu Movies & TV, Viewster, NFB Films, Daily Motion, Pandora, Picasa, Facebook, Tvitter (Twitter for TV), AccuWeather, AP News, Rockswap Adventurers, Ultimate Poker, Opera Web Browser and Opera TV Store. 4K versions of Amazon Instant Video, UltraFlix and YouTube are forthcoming.

http://hdguru.com/hisense-introduces-598-50-4...h-walmart/