The clip shows what seems to be a Spartan-looking character kicking another solider off a cliff; an homage to Frank Miller's 300. And of course, the title Odyssey infers some connection to Ancient Greece, specifically the Trojan War - which took place in the 12th century BCE.
Beyond the tweet, information about the title's gameplay mechanics, storyline, and protagonist is scarce. Unless Ubisoft breaks from tradition and waits until early next year to release it, chances are that we will see Odyssey at E3 2018 this year ahead of a fall 2018 launch.
Between that, the visual cues in the announcement thumbnail, and a report from French outlet JeuxvideoLive, it's nearly certain that the next AC title will be set in Greece.
While we don't know much more about the game at the moment, Kotaku reports that Odyssey will retain numerous RPG elements introduced in Origins as well as introduce a few new ones, such as dialogue options.
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Ubisoft has yet to officially announce a new entry in the Assassin's Creed series.
Almost two months ago, one report suggested that Ubisoft's next entry in the Assassin's Creed has been in development since as early as 2017. While Origins altered the combat, Odyssey will introduce dialogue options, a first for the series.
In addition, the sources said that Odyssey will be out in Ubisoft's 2019 fiscal year, which means it'll be out by March 31, 2019.
Trusted Reviews has compiled everything you need to know about Assassin's Creed Odyssey including all the latest news, rumours, trailers and more! It'll be interesting to see what Ubisoft does with an Assassin's Creed game set in ancient Greece, as it's been an enduring setting across pretty much all forms of entertainment.