Andriasang: Square Enix announced today a release date of August 2 for Dragon Quest X. The Wii title will be priced ¥6,980 on its own and ¥8,980 when bundled with a USB Memory card.
(Dragon Quest X, Wii)
It's scheduled to come out for both Wii and Wii U. As of now the only one that is dated is the Wii version for Japan, but a Wii U version will come out at some point after the Wii U comes out. They will both use the same servers, so someone playing on the Wii will be playing with Wii U users (and obviously vice versa).
So far the only difference between the two versions, that has been revealed, is that the Wii U version will have better graphics.
So far the only difference between the two versions, that has been revealed, is that the Wii U version will have better graphics.