I'm pretty excited about this, and plan to pick it up release day.
I doubt Wayne's method is the one from Swami / Mantra. He has an emphasis on simplicity and his tricks being impromptu, so more than likely it's just really creative sleight of hand. If it were dangerous in any way, we'd probably have seen some sort of "Not sold to anyone under 18" warning by now.
Don't know if the worldwide release will include it here, but there's any number of reasons it wasn't hyped up as a T11 product. Maybe, as others said, he's just attached to it and plans for this trilogy of his to be a personal endeavor. Maybe it will come out here, but he just wants to draw attention and promotion to his personal site (hence the discount) beforehand. Or it could be that the Theory11 crew is focusing on other releases at the moment, who knows.
Whatever the case, I'll be ready and waiting come release day.