"If you're asking about a sequel ... right now I'd say it's 50/50," Creative Director Neil Druckmann responded.
If that's not enough to rile people up, Game Director Bruce Straley teased in the same thread that the team is "working on the 3rd DLC drop for MP right now! ... and maybe something else ... we'll see." It's almost like they enjoy teasing fans!
Of course, if you missed your date with "Left Behind," the game's Valentines Day dose of narrative DLC, that's an immediate opportunity to spend more time with Ellie.