It seems that Samsung has joined with Sony to bring the PlayStation Now service to its smart TVs in the next year, allow users to play PlayStation games without a gaming console. You will need to order a Sony dual-shock controller to play your favorite games.
PlayStation Now will be on your Samsung smart TVs (some select series, not all) as an app and will support all functions like play games online, save the progress of your game or earn trophies while play.
At launch date, PlayStation Now for Samsung smart TVs will only available for the U.S and Canada. If you plan to attend Consumer Electronics Show 2015 (CES 2015), it will showcase at there from January 6 in Las Vegas.