Although the title was originally scheduled for release in early 2015, its developer has now said it needs a little longer to complete the title.
"Last year we announced that Inside would be out out in 'early 2015.' It's not," a PlayDead representative told IGN. "After five years in development, we--more than anyone--are looking forward to the release.
"We are so close, but getting it right has taken a little more time than we anticipated."
Announced in 2014, Inside bears a striking resemblance to Limbo, the studio's breakthrough title. From the little shown of the game, it seems Inside will also also explore themes of desolation and despair.
Inside places you in a world in which the citizens are controlled automatons. The player takes control of a young boy who still has his mind and must journey across the Orwellian nightmare.
Inside may appear at Microsoft's E3 press conference, which takes place on June 15, starting at 9:30 AM PDT.
Microsoft has previously said it will be trying something a little different this year at E3, though it did not detail what that will entail. Thus far, it has revealed it will focus more on first-party games this year, but Spencer has indicated Microsoft will be looking to shake things up in other ways.