There's a good chance it's this year -
source:
"We have just successfully completed our beta milestone, which is pretty far along," said De Jonge. "We're now in the final stages of development. So we are polishing the game and fixing bugs. We are also wrapping up certain aspects of the game, like some of the machines being behind schedule - because it takes an enormous amount of time to build them. We're working on the final cinematic. So, we're really wrapping up. There's still a lot to do with a game of this size and magnitude, but we're in the final stages."