Rumor - New Metroid for 3DS?

So apparently this fellow named Jonathan Ross (not someone with a job that I would consider to be an insider source) responded to a tweet and made it seem as though a new Metroid was being announced at the January 19th shows/conferences that Nintendo are holding, but has since "re-clarified" that it was misinterpreted.

But, what's to misinterpret? I don't use Twitter myself (no mobile device that supports it, so why do it from my computer?) so I don't know how easy or hard it is to accidentally respond to the wrong message. But that's not really my concern with this post. My concern is, if true, what could the Metroid game be?

Team Ninja just got done with Dead or Alive: Dimensions for 3DS, so I doubt they would be making it which perhaps throws out an Other M style game, and Retro Studios didn't finish up Donkey Kong County Returns all that long ago, so I'm sure the game would not be far along enough to use as a big announcement for the event (better suited for E3, me thinks). Infact, Metroid: Other M didn't happen all that long ago, so what's the hurry to make a new one so soon? Well maybe it isn't new at all.