Now that Nintendo's unveiled plans for its next console, don't be surprised see companies reconsidering releases on the existing Wii. Andriasang is reporting that Square Enix is currently considering adding "support" for Wii U to Dragon Quest X.
There's a stark difference between what Miyamoto's doing and what Square Enix is proposing, though. "Support" for Wii U could be nothing more than some light Wii U hooks inside of Dragon Quest X, rather than taking what's been worked on for Wii and completely upgrading for Wii U. It's also possible that Square Enix could be considering a separate, Wii U-enhanced release in 2012.
As Andriasang points out, it's impossible to say what Square Enix could pull off, as it's unclear whether Wii discs could even support Wii U. Companies haven't had development kits for very long, and considering the launch isn't until at least summer of next year, much can change.