Official Nintendo Magazine in their latest issue, have claimed to have a world exclusive game revelation in their mits. The biggest point of interest is the front cover image, displaying a collection of stars, which thanks to a clever mock-up, appears to reveal ONM's game announcement to be of the much rumoured NiGHTS sequel for Wii. But we'll leave it for you to decide for yourself.
I think it's a long-shot, but here's hoping.
Wiki entry on nights, for reference