I spoke with Amazon customer service yesterday (in broken French, haven't spoken French recently), and the agent insisted that this version is not a Steelbook. She said the only steelbook version is the one with the phaser.
I'd emailed earlier about the artwork and was sent a link to amazon.com 's 3D amaray.
I still think it's this steelbook.
It is clearly specified on the Amazon.fr page that it is a metal limited edition steelbook. So I don't know why you have doubts... She probably wasn't aware or said that so that you buy the version with the phaser which is more expensive
Seems to be a Fnac Exclusive for this one : Fnac.com