Since the trashing of the original Uncharted film idea and induction of Illusionist director, Neil Burger, Naughty Dog has been very hopeful about the new direction.
Apparently Burger has been very adamant about keeping this adaptation as close to the game as humanly possible meaning no random inclusion of Nathan Drake's father and uncle. Instead we will, of course, have our Sully. Apparently Burger and his creative directors have been going back and forth with Naughty Dog making sure that everything they were doing was accurate to the game.
Still no details on whether or not this game will be a different story or a similar story to the first game, but in any case, if Naughty Dog are ok with it, it has to be good.