Heh, or at least odd that its suddenly announcing it.
I think the 160+ page Art book and the Pewter Figurines kind of well ... is a fiendish copy of Elemental's limited edition.
Still, its probably less of a direct copy and more of a "How can we increase sales?" ploy ... and that ploy led to copying Elemental.
I think the original Civ V special edition was just planning to have the behind the scenes footage + soundtrack CDs + extra civ (I guess), and it was called the Delux Edition ... and it was Steam only Digital only.
Now ... the Special Edition looks like its either something completely different from the Steam "delux edition" or its an expansion of the original idea and now is both Digital and Physical.
Not sure which is which ... but I can guess that their Digital "delux" edition failed sales wise 