While the teaser does not show much, it did confirm that the game will be set in ancient Greece and, as its title suggest, could draw influence from Homer's Odyssey epic poem, which focuses on the Greek hero Odysseus.
According to Kotaku's sources, Ubisoft is set to include more RPG elements with the latest title in the Assassin's Creed franchise, which is a welcomed addition, as well as more dialogue options and both male and female main characters.
Of course, Ubisoft has scheduled a big E3 2018 press conference for June 11th, and Assassin's Creed Odyssey will most surely be a big part of it.