It might be my most anticipated next-generation title right now, but the game has certainly had its fair share of hindering development issues.
In a recent Polygon report , we learn that the Thief reboot has been in the works at Eidos Montreal since 2008. And anonymous sources are saying that corporate politics and corporate confusion have led to inflated production costs.
It seems the game has hit a number of snags, and it didn't help that numerous senior and junior team members escaped. It was a long, hard road to the end of the "vertical slice;" that's industry terminology for a demonstration of the potential art, design, gameplay and overall theme. This is presented to a publisher and the publisher then decides if the project should enter full production. To further complicate matters, a separate Eidos Montreal team began working on Deus Ex: Human Revolution . Thankfully, despite causing Thief more issues (apparently), the new Deus Ex fared well.
Then, Square Enix acquired Eidos in early 2009 and they asked to see the vertical slice for the Thief reboot. This is when things started to pick up because after only nine months, they got the presentation and gave the project the green light. We can't be sure how many people left the team, and we don't know how long – in total – the reboot has been held up. All we know is that we want it. It's scheduled to hit the PS4, PC and presumably the new Xbox in 2014.