Watch Dogs 2
We're really in a Ready Player One-ified world...
There's a mission where your protagonist hacks into Ubisoft San Francisco in order to get access to a trailer for a new video game and leak it to a video game website. This fictional leak was a real video game, but that game has probably been canceled. Does it still exist in the Watch Dogs universe?
(This is especially interesting because Ubisoft is the kind of company that might intentionally let stuff leak to get more press coverage...)