I'm actually glad to see so many people deciding to not take a stance on this one. Usually there'll be a huge debate over the speculative evidence, and I'm usually able to suss out where it's headed (the old "Which mage becomes BLM" debate, the "is it a barcher" debate, etc.) but this one's just too close to call.

That's clearly Scholar's aesthetic, but in fantasy worlds, scholar and arcanist are very similar concepts - a gatherer of useful and sometimes secret knowledge. Between that and the book, there's just as good a case for SE wanting Arcanist front and center with Summoner for the release of the class/job as there is for there being a job we know nothing about coming from a class we've never heard of... unless it comes from Musketeer, which would just be great to watch unfold after the ARC > BRD incident ... or maybe they've even finally caved of class to job branching.

We're just going to have to wait until E3 and see what they've got up their sleeves. Too much in the air right now.