Possible, but not probable.
A sequel to Naughty Dog's incredible The Last of Us is generally held not to be a question of "if," but "when." Rumors and teases have abounded in recent years, with Naughty Dog employees and actors like Nolan North and Ashley Johnson seemingly letting details slip of a potential sequel throughout the production of this year's Uncharted 4: A Thief's End.
Eagle-eyed players who finished Uncharted 4 were teased further with an image for "The Last of Us: American Daughters," featuring a pregnant young woman who may or may not be an older Ellie.
The news keeps pouring in, as a Youtuber named JoeDoeFoe claims to have found an aborted E3 2016 article from an undisclosed magazine that features details on The Last of Us 2 as well as snippets of an interview with Neil Druckmann and Bruce Straley, the dynamic duo behind the original game and Uncharted 4: A Thief's End.
Pretending for a moment that this could be a legitimate leak, the details shared are certainly conceivable. A sequel set 5 years after the first game's end with Ellie as the primary protagonist makes sense, as does a focus on more open-ended environments given Uncharted 4's highly successful experiments in that arena.
Putting the knife to the rumor is Game Reactor, reporting that this whole mess is bogus according to their source(s), whom accurately leaked the delay of Horizon: Zero Dawn out of 2016 and early details of the PS4 Pro. It's a bummer, certainly, as for many of us The Last of Us ranks among the all-time greats. It's also expected, however, considering that Uncharted 4 is still practically brand new.
I wouldn't put money on hearing anything concrete and official about The Last of Us 2 until Sony's PlayStation Experience event this December at the earliest.
Source(s): Game Reactor