@ODBMongoose and @Redundant... I'm in the camp that's expecting Space White to be a light gray color. If just the right shade, I think it will look great! But I concede that manufacturer's have sometimes concurrently offered multiple versions of white before.
Will be nice to finally get to the bottom of this once finished cars roll out of assembly into dealers.
I know the angles, lighting, and white balance make all the difference... but in these shots, the space white (upper left) looks light gray to me.
Meanwhile, the "Space Gray" interior on the Premium looks almost white to me.