Lorne officially confirmed that the game was pushed to 2018 at the end of
this video.
That just means that the ARG will have to last a bit longer. It hasn't always been about screenshots, the first part of the ARG was actually about meeting @edmudokon and finding the 1029.io website.
So I'm sure OWI will come up with something else to keep us busy when the 5 pictures have been revealed.