+1 there are many times that a new hairstyle/color, a new facial feature or a new wardrobe is added. I am poor, I can't afford a subscription. I'm planning on getting one as soon as I'm able (first game I've ever wanted to pay for extras, shows how good it is too me). But when new stuff is announced, the first thing I wanna do is see it. Even if I can't buy it, I just want to see what it looks like.
And as Ayasta said, it could push someone towards becoming a subscriber. I want a sub simply for the cheaper credits, and teleport tokens. However someone may be thinking of getting one soley for the exclusive customizations, in which case, who'd pay for something they can't see.