The Last of Us on Playstation 3 was a masterpiece, graphics/visuals, storyline, gameplay in every aspect it was perfect. Naughty Dog once again showed why they are the best in business and what exactly is raising the bar for them in gaming industry. Few months after the launch of The Last of Us on Playstation 3, Naughty Dog announced a remastered HD port for Playstation 4, "The Last of Us: Remastered". At the time of official announcement, Naughty Dog stated that the studio is targeting "60 FPS" for Playstation 4.
They will still be making improvements on it till the last second and I am sure when they will feel completely satisfied they will show us something.
We knew nothing about the MP in the game till the last week of release. In ND I trust.