Is 4K Now Standard for Sony Releases?

[Bluprint]

Just got "This Is The End" on blu-ray and noticed that the top back of the slipcover says "MASTERED IN 4K"?

Is Sony 'now' doing the right thing and making "Mastered in 4K standard" for new releases???

 

[Icemouth]

The difference between Blu i.e standard HD and 4k is negligible and virtually non-existent in tvs' of 50 inches or less - which the majority are limited to for one reason or another.

This is literally the exact statement thrown out about 720p vs 1080p. The slow adoption rate of blu-ray was because the random joe "could barely see the difference", yet here we are.