13 in the US is very different from 4 in Japan.
Here the 13 crap is like a joke, there they take it seriously. They even skip that number in buildins; it goes 1, 2, 3, 5, 6, ...
I have a friend who works in Toyota here in the US and even here they skip the 4th floor, so totally different.
I personally think Orbis, if the rumor is true, it's just a development name like the 'Revolution' for the Nintendo Wii. But I also think they won't name it Playstation 4 or PS4... it's even kinda lame. They need something fresh IMO.

