The game will be set in the Assassin's Creed universe.The themes are similar (fighting against the conspiracy that runs the world behind the scenes), the UI aesthetics are similar, and they're both from Ubisoft. The use of modern technology to monitor and control people is something that the Templars have already done.
Aidan is EruditoHe has the skill capable of getting into Abstergo's systems (and all this just from the demo, no less). You could say that the mobile players he calls on to help him are people he has convinced of Abstergo's grand conspiracy (and on a metafictual level, Erudito's messages are uncovered by us, the players, who are also the same people that help Aidan so it all neatly wraps together).
This is [insert series] The Game
The ending involves Aiden putting Chicago, if not the world, back in to the Dark Ages by shutting down the ctOS
If there's a sequel, the story changes depending on your karma levelIt's like playing Infamous 2 where people react to you if you were good or evil.
Aiden will become a, at best, Type IV/V Anti-Hero, if not an outright Villain Protagonist, by the end of the game.His crusade will spiral out of control and pretty much anyone will become a target.
Aiden will become an ally of the AssassinsThe game is confirmed to take place in the same verse as the Assassins Creed game and the Templars are partnered with the company that owns Ct OS. Since Aiden already has access to it, opposes injustice, and has combat skills to match, I could easily see him becoming a friend to the assassins.
The game is a BioShock alternate universe.There's a man, a city, and a lighthouse.
Ubisoft's decision to try and canon weld Far Cry, Assassin's Creed and Watch_Dogs was a relatively late-game idea.Considering how Assassin's Creed establishes that EVERY conflict is part of the whole Assassins vs Templar war, it seems kinda weird that Blume and the whole ctOS would be relatively unconnected with the whole war. Same with Vaas, since he can't exactly stand on either side of the war (he's a Chaotic Evil, while the Templar's and Assassins are Lawful Evil and Chaotic Good respectively). Essentially, it seems Ubisoft just wanted to make it's own "universe" for the sake of having one no matter how disparate the individual games are from each other. I wouldn't exactly be surprised if The Crew or pretty much any non-Clancy/non-Rayman game hereafter has some reference to try and place it into the Ubiverse.
Clara didn't die.Just like the mook from the opening of the game, Clara survived her injuries, and was transported to the hospital when the police responded to the firefight at the cemetery. Aiden doesn't know about it, because he was at that point laser-focused on getting red-hot revenge on Damien.
Aiden will be in an Enemy Mine situation with Blume in the sequelSure he's number one with a bullet to Blume, but they'll end up needing each other to face a more extreme Ded Sec. Of course, Aiden knows soon as they're taken care of, Blume's coming for him next.
Why Jordi is an Unperson in ctOSHe is most likely someone who's a high level executive for Blume or close enough to someone who could delete every last bit of info from him from the grid like he never existed.
Aiden accidentally activated Belwether when he set ctOS to profile crimes "before they happen."He asks the system to find situations that lead to crimes, and this triggered Belwether to influence people into causing the crimes to happen; thus giving him what he told the system to find. Granted, this mostly influenced people who were on the brink.....
Blume is using technology derived from First Civilisation technology in ctOSSpecifically in Belwether, which is not only capable of influencing the entire population of Chicago without much difficulty (to somewhat creepier levels than just plain old subliminal messaging would), but is also hinted to be intelligent on some level in the audio logs. As watch_dogs and Assassin's Creed canonically share a universe (with mention of ctOS in ACIV and Abstergo Entertainment's CCO being a target in WD, and having disappeared while visiting Chicago during ACIV), it wouldn't be impossible.