With Naughty Dog posting on Twitter that "It’s disappointing to see the release and sharing of pre-release footage from development". The leak, which includes gameplay footage covering the full plot and level details for The Last of Us Part II, is rumoured to have come from a disgruntled employee at Naughty Dog. We don't know the reasoning, but speculation points to a culture of crunch at the studio as highlighted in a recent Kotaku report.

Which, again, is speculation. Since the leak Sony has been quick to take-down footage but several sources out there have collated all the major plot points - including several spoilers.

A message from the studio: pic.twitter.com/f0TzIZXUIB

— Naughty Dog (@Naughty_Dog) April 27, 2020

As per the above statement from Naughty Dog, "Do your best to avoid spoilers and we ask that you don't spoil it for others. The Last of Us Part 2 will be in your hands soon. No matter what you see and hear, the final experience will be worth it." With studio head Neil Druckmann adding, "Heartbroken for the team. Heartbroken for our fans. We’re still incredibly excited to get the game into your hands."

The Last of Us Part II is on track for release on June 19 for PlayStation 4.