For those who think resolution doesnt matter or is barely noticable.....
From Left to Right
720p - 900p - 1080p
1080p makes a huge difference.
One of the main reasons I am moving to PS4 is because I am tired of blurry 720p and even sub-720p games on current gen.
1080p on PS4 will be glorious and should be mandatory for every next-gen game.
It should also be noted that the bigger your TV is, the more noticable the difference is. I play on a 60" LCD so 1080p is very important to me.