Some member of the GT forum proofs KH3 for the Wii is fake.
The cover was just a photoshop. Created by an art taken from Devianart.
Actual Page:
https://w1.buysub.com/pubs/IM/NTN/np-sub-no-premium.jsp?cds_page_id=40917&cds_mag_code=NTN&id=1211173790511&lsid=81400007299020257&vid=2&cds_mag_code=NTN
Now for the Cover:
http://img152.imageshack.us/img152/9804/nintendopowerwebsitetj4.jpg
The art was made by a fan on Deviantart.com in 2007:
http://kingdomhearts.deviantart.com/art/Shattered-Mirror-60753954