So everyone is guessing right now if we really are going to Marleybone, and I say I am leaning towards the true side because blind mew posted a reply to a thread on the forums.
"....I'm not going to overly hint about upcoming content , but one thing I can say, though, is that Book 13 is going to be a bit darker that what we've done before, and it's definitely a war story...."
A war story huh?The only worlds that are at major war right now are Valencia and Marleybone so I have a feeling we are going to be a little pirate spy for Marleybone and use the Valencia stormgate in Hamamitsu skyway.