User blog comment:Master Sima Yi/Assassinews 12-05-'15 — Assassin's Creed: Syndicate has been revealed!/@comment-5174994-20150512182658

Quote from the guardian:

"It begins with the game’s two brand new assassins, the twins Jacob and Evie Frye, who are both playable and both at the centre of the game’s narrative. Right now we’ve only heard much about Jacob, as Evie is barely mentioned during our presentation at the Quebec office. It’s an odd decision, especially considering how much criticism that Ubisoft has received in the past for not fully featuring female characters, but Evie is described as a real driving force in Syndicate. We’ll just have to wait to find out more."

It seems Evie is playable, they just haven't shown her. That's good news, but she's still clearly not the main considering that Jacob gets most of the front cover. What exactly does that mean?