https://www.polygon.com/2018/5/31/17413526/assassins-creed-odyssey-sequel-rumor-e3-2018

Assassin’s Creed Odyssey may be the next entry in Ubisoft’s time-bending action franchise. French video game site jeuxvideo-live.com posted an image of a novelty keychain promoting the unannounced title. The report claims the image and additional info comes from a source that goes by the alias Arcticblue, and describes Odyssey as a follow-up to Assassin’s Creed Origins.

While we can’t vouch for the source, the name (borrowed from the required high school reading and Greek myth) suggests a Greek setting, which aligns with various rumors from earlier this year.