It's possible the latest installment in the incredibly successful Assassin's Creed franchise may have just been leaked. French website JeuxVideo-Live has posted an image of a promotional keychain that features the title "Assassin's Creed Odyssey" on the packaging. Both the title and the keychain style suggest that the next game in the series will be based in Ancient Greece.
https://www.notebookcheck.net/New-Assassin-s-Creed-game-may-have-been-leaked.306398.0.html