Just put the J-Card of the previous German steel around it (which looks the same) and a FSK sticker and then reseal the entire thing.
When more people get this, then I believe it. But two pictures are not enough yet.
I hope it's true, because German Collectors deserve a release of this nice Steelbook. But maybe it's a fake. I found no German site, that announce this Steelbook. No German Shop that sell this Steelbook.