Watch Dogs Legion Details Leak?

A post on resetera discusses a listing on Amazon UK for a new Watch Dogs game called Watch Dogs Legion. This has since been removed, but Kotaku confirms they think this is legit, saying they've "heard the name from several sources plugged into the company" and that this will be set in London. It seems safe to guess this will be announced at E3, but in the meantime, they add that they understand the description to be accurate in saying the game will allow you to play as any NPC in the game, which means they won't actually be non-playable characters. Word is:
Play as anyone, Every individual you meet in the open world, has a full set of animations, voice over, character traits and visuals that are generated & guided by gameplay systems.