In the interview he said that the new class is a "spider webber", so I think the new job might use strings. Puppeteer comes to mind, but then again Samurai/Blue Mage and Dancer have been more popular and he said he doesn't want another pet class for a while (?). Apart from that, I only know assassin type classes who use strings as weapons, but we already have ninja. I think Blue Mage/Beastmaster/Samurai are possible, but I don't really see the connection, since all of his shirts have been kind of "in your face" hints so far that have been obvious. Or maybe they will do a new job or one that no one thought about?