It seem that one of EA's former concept artists has posted up a ton of concept art from never officially announced games.
That might mean that they've all been canceled though, outside of Syndicate, as that concept art dates back before Starbreeze started making it I think.
There are more through the link, but a lot of the unposted ones are Harry Potter.
Gun Head:
Hurikan:
Unsure 1:
Unsure 2:
Unsure 3:
Oliver Twist:
Syndicate (Pre Starbreeze? Dated 2005):
Source: http://dearsleyart.blogspot.com/
Via: http://supererogatory.tumblr.com/post/372118555
That might mean that they've all been canceled though, outside of Syndicate, as that concept art dates back before Starbreeze started making it I think.
There are more through the link, but a lot of the unposted ones are Harry Potter.
Gun Head:
Hurikan:
Unsure 1:
Unsure 2:
Unsure 3:
Oliver Twist:
Syndicate (Pre Starbreeze? Dated 2005):
Source: http://dearsleyart.blogspot.com/
Via: http://supererogatory.tumblr.com/post/372118555