The thing that bugs me is that we can't really identify what's on the icon. Sure, it can look like a Star Wars world, or space, or even mountains and snow, but it's not something that we can recognize for sure, contrary to the other icons that all represent a specific object.
Plus, the leak is so obvious... I can't believe they did it unintentionally. How can they not see it ? It's visible on 5 different screenshots...
So my guess is they either put a fake icon with random shapes to make us talk, or they did a "stylized" version of the real icon to let us guess what it could be.
If it is Star Wars, I don't understand why the logo isn't more obvious, like the death star, or lightsabers. For space, a spaceship or a planet. If it's a snow world, ski sticks would have worked. But this... is really different and not easy to depict.
