Currently, according to my DD/Research, 17 U.S. TV shows shoot & MASTER in 4K (that is significant...for a myriad of reasons)...but the bottom line is whatever IPTV format is available for streaming...currently some 800 IPTV Channels may be streamed via the Nuvola NP-1.
Not all 800+ IPTV Channels are PUBLIC or FREE, but MOST are. In addition, Roku -- for example -- has had a policy against streaming YouTube (which was the first to adopt 4K compatability, again, according to MY DD/Research) & NTEK has embraced YouTube as well as: Skype, Facebook, including 10 4K Films, 10 Games & more loaded features onto a Nuvola Media Player...PLUS making an UHD TV Channel available as well.
So, NTEK's Nuvola NP-1 can stream EVERYTHING on ANY TV, 4K or not,...which the competition can't do...let the FIREWORKS BEGIN...
Get the DD going on 4K....this is an AMAZING DEVELOPMENT out of NTEK's Research Division!!!