The Official Nintendo Magazine has teased a new game set to be revealed in its April issue.
A teaser discovered in the current edition reads:
“OOOOOH! New Wii U game! (And no, it isn’t F-Zero or Star Fox).”
An important word of caution: there’s a fairly high chance that the tease is for Sonic Boom. That’s not at all confirmed, but wouldn’t be at all surprising given how it was just announced a few days ago, and ONM likely couldn’t talk about the title before publishing its latest issue.