Movies from studios have been in 4K and higher (since Digital cinemas have been 4K for years already) 1080P on a 200" screen just doesn't work
I on the other hand not really feeling like I need 4K anytime soon. Give me some good (BluRay type) 1080p and i'll be happy for the next 5-10yrs. I hate this 7Mbps video being stated to be HD. Resolution alone is not the definition of HD. Hell I an make a 2KB image be HD by stretching it if I want to! LOL
Once 15-25Mbps becomes more common (for streaming anyways) then i'll be happy with that. For my household at least, 4K would be a waste.